Algae Growth On Plants

mark4785

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After completing my fishless cycle in late July of this year I've had brown algae/brown diatom formations on the glass, ornaments and plant leaves. I was told on TFF that such occurences are to be expected in newly cycled tanks possibly due to high silicate and/or phosphate etc. 3 months later, I still have the brown algae/diatom formations and in the last few weeks there has been green algae formations the size of pin heads growing on the glass.

I run 2 x 24W fluorescent bulbs, about 7 hours a day. There is c02 injection during this period which causes the c02 drop checker to change to a bluey-green and I'm currently adding Tetra Plantamin micro-nutrient liquid fertiliser after doing partial water changes; I add 5ml for every 10 litres of water replaced as per the instructions.

My nitrate level is 5.0 ppm and the Phosphate level is 2.0 ppm.

I think the only thing causing the fast algae growth would be the high phosphate level, high sillicate level (I don't know if it is present as I don't know how to test for it!) and the fact that I'm having to remove plants as they are getting choked by algae growth on their leaves. The effect of removing the plants is that the algae isn't competing for nutrients and also has a good supply of c02! This leads me on to a few questions...

1.) Once a plant has had dense brown algae growth on it's leaves for several weeks, are those leaves not salvagable? In other words will they rot? I've removed an Anubias due to the fact that its leaves looked dirty and algae was readily growing on new shoots/leaves.

2.) If I remove the algae from most plant leaves (leaving 1-2 leaves with covered with algae) and remove the nutrients which that algae used to grow, will that remaining algae spread? In other words, do I need to do a thorough removal of all the algae by replacing all of my plants, cleaning glass, ornaments, filters in order to stop it from spreading?

3.) Which plants are the best competitors for nutrients in the water column?

4.) What sort of small cat fish (suitable for a 120Lt aquarium) will consume green and brown algae formations?

Mark.
 
I can't answer all your questions, but I think having fast growing plants out-competes the algae keeping it from forming. Also, someone correct me if I'm wrong, but dosing with Excel keeps the algae in check as well.

I have an Otocinclus in mine right now, and he's doing a pretty good job taking care of my "brown wall". LOL!
 
hi, what filtration do u have and how is it released back into the tank? (spray bar, hose etc...)

how is your co2 released? (via your filter/powerhead?)

the more plants u remove the easier the algae will grow! anubias will luckily handle its leaves being scrubbed.

if you already hav press. co2 you dont want to be dosing excel!

how long do u keep your co2 on for and how many bubbles per min?
 
I'm currently adding Tetra Plantamin micro-nutrient liquid fertiliser after doing partial water changes; I add 5ml for every 10 litres of water replaced as per the instruction.

Hey Mark, it'd be a lot more cost effective for you to be dosing Flourish


My nitrate level is 5.0 ppm and the Phosphate level is 2.0 ppm.

actually do you still have that TPN plus? If so start to dose this. Your macros are still a bit on the low side and this is probably the reason you're getting green spot algae. Mainly the phosphates, i have had a bit of a problem ith GSA over the last few weeks, i upped my phosphates and its now gone

Remember, Mark, the high nitrate and phosphates won't cause algae. The plants 'will' out compete for these and win.

Once a plant has had dense brown algae growth on it's leaves for several weeks, are those leaves not salvagable? In other words will they rot? I've removed an Anubias due to the fact that its leaves looked dirty and algae was readily growing on new shoots/leaves.

Yes the leaves are salvageable, if you really wated you could strip it right back, it'd still grow.


If I remove the algae from most plant leaves (leaving 1-2 leaves with covered with algae) and remove the nutrients which that algae used to grow, will that remaining algae spread? In other words, do I need to do a thorough removal of all the algae by replacing all of my plants, cleaning glass, ornaments, filters in order to stop it from spreading?

Again, Mark and we tell you this everytime, nutrients 'do not' cause algae or left over fert are not eutalised by algae. Light and ammonia cause algae. Have a read of this...

http://www.theplantedtank.co.uk/algae.htm

Which plants are the best competitors for nutrients in the water column?

Fast growing plants and the fastest in my opinion is Hygrophila (species). However, if you plants these expect to be adding more ferts.

What sort of small cat fish (suitable for a 120Lt aquarium) will consume green and brown algae formations?

for diatoms, Otos are the best IMO at removing them. Nothing will tough the GSA as its to hard for them to remove. You'd get a small shaol of otos in your tank. They aren't that messy.


one more thing. Excel is fine to use while using C02.
 
hi, what filtration do u have and how is it released back into the tank? (spray bar, hose etc...)

how is your co2 released? (via your filter/powerhead?)

the more plants u remove the easier the algae will grow! anubias will luckily handle its leaves being scrubbed.

if you already hav press. co2 you dont want to be dosing excel!

how long do u keep your co2 on for and how many bubbles per min?

The c02 is added to the tank using a c02 injection system. There is a c02 cylinder on the floor with need valve and pressure gauge. A pipe leads from the cylinder into the tank where it travels up a c02 diffuser.

The c02 is on for 6 hours adding 10-12 bubbles per minute.

I'm currently adding Tetra Plantamin micro-nutrient liquid fertiliser after doing partial water changes; I add 5ml for every 10 litres of water replaced as per the instruction.

Hey Mark, it'd be a lot more cost effective for you to be dosing Flourish


My nitrate level is 5.0 ppm and the Phosphate level is 2.0 ppm.

actually do you still have that TPN plus? If so start to dose this. Your macros are still a bit on the low side and this is probably the reason you're getting green spot algae. Mainly the phosphates, i have had a bit of a problem ith GSA over the last few weeks, i upped my phosphates and its now gone

Remember, Mark, the high nitrate and phosphates won't cause algae. The plants 'will' out compete for these and win.

Once a plant has had dense brown algae growth on it's leaves for several weeks, are those leaves not salvagable? In other words will they rot? I've removed an Anubias due to the fact that its leaves looked dirty and algae was readily growing on new shoots/leaves.

Yes the leaves are salvageable, if you really wated you could strip it right back, it'd still grow.


If I remove the algae from most plant leaves (leaving 1-2 leaves with covered with algae) and remove the nutrients which that algae used to grow, will that remaining algae spread? In other words, do I need to do a thorough removal of all the algae by replacing all of my plants, cleaning glass, ornaments, filters in order to stop it from spreading?

Again, Mark and we tell you this everytime, nutrients 'do not' cause algae or left over fert are not eutalised by algae. Light and ammonia cause algae. Have a read of this...

http://www.theplantedtank.co.uk/algae.htm

Which plants are the best competitors for nutrients in the water column?

Fast growing plants and the fastest in my opinion is Hygrophila (species). However, if you plants these expect to be adding more ferts.

What sort of small cat fish (suitable for a 120Lt aquarium) will consume green and brown algae formations?

for diatoms, Otos are the best IMO at removing them. Nothing will tough the GSA as its to hard for them to remove. You'd get a small shaol of otos in your tank. They aren't that messy.


one more thing. Excel is fine to use while using C02.

Can I ask what Excel is?

Am I getting more algae because the plants I have are dieing due to lack of macro-nutrients? I never dose macro-nutrients, and why would I if I have 2.0 ppm of phosphate!? I understand the nitrate level is quite low so maybe I need to get TPN+ to take care of this.
 
One thing I didn't mention earlier is that the water has 0.25 ppm of ammonia in it and I'm struggling to work out whether plant/algae die-off is causing it or the disease treatment product I put into the water 3 days ago called 'WaterLife Parazin' containing 'difubenzuron'.

Right now I feel like taking all of the plants out and binning them.

I have attached some pictures below of the state of my plants, tell me what I should do with them please...

Bin them, prune them or keep them as they are...

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Pic 5
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Mark

You have a huge problem here.

It is either that you won't or don't want to listen or maybe that you are scared or confused to take the advice.

I've had a look at many of the topics you have posted and I think I can concur it is possibly the latter. This wasn't me trying to pick fault. It was because yet again you haven't put the tank specs up and rather than ask yet again I searched your other posts to get that info.

Yes I have looked at loads since July (scanning not reading fully) and it looks to me that your problem is that you are asking advice in several forums.

To name the most obvious you are asking about nitrates and phosphates in the new world cichlids forum and then the same in here.

I am pretty sure that you have already noticed that you will get vastly different answers from these 2 forums.

You have to decide whether you are going planted or not. It is no good to take advice from a fish sub-forum and then apply their rules to a planted tank. These are 2 totally different systems and therefore have some vastly different rules. Applying the rules of non planted to planted and vice versa will in most cases cause problems so you need to make the choice.

I also read in one thread you dismissing someone detailing a discus planted tank in relation to nitrate toxicity that you were questioning. Your statement one about not accepting one case of a tank and fish you had never seen or something similar. If you are only after an answer that pleases you or agrees with what you wanted to hear then planted will not be for you. It seems you want people to say nitrates and phosphates are bad etc.

I was this way once. I believed certain things and was pretty cautious about accepting certain 'new beliefs' however I accept almost all those same 'new beliefs' now. Why? because they are right

Anyway onto the problem above and then I'll be cheeky and answer a few of the others I've read :)

I run 2 x 24W fluorescent bulbs, about 7 hours a day. There is c02 injection during this period which causes the c02 drop checker to change to a bluey-green and I'm currently adding Tetra Plantamin micro-nutrient liquid fertiliser after doing partial water changes; I add 5ml for every 10 litres of water replaced as per the instructions.

Excellent you have pressurised CO2 to match the lighting you have. Problems though? Yes you haven't read the threads/pins suggested. Why is your drop checker bluey green? that is minimal CO2. I dare say a non CO2 tank would be a bluey green. It should be a beight vivid grass green at minimum. Personally I run it to a limeade colour bordering yellow.

We also said you need macros. In other threads you have been told this yet you continue to dose solely trace elements.

The c02 is on for 6 hours adding 10-12 bubbles per minute.
Am I reading that right? You may as well not be adding CO2. On a low-medium light (similar to yours) I would be at around 120-180bpm

Next Yes add macros. How do you know you have2ppm of phosphate? I hope not from a hobby test. Even so where is this phosphate coming from? Are you heavily over feeding? What is your water board's reading. Mine is 0.6ppm and I still add on top of that.

If you are going to add anything into the tank either use TPN+ or dry ferts+traces. Forget all these other options. The one you have now is worthless without macros in the tank as your results show.

As for the fish. You seem paranoid about safe levels for the GBRs to the point you will not accept any advice from anywhere but the New World Cichlids sub forum. However check out how many people in planted DO have GBRs yet dose huge excess routines. Check out the discus thread you dismissed in another thread.

I have had dwarf cichlids in my tank whilst adding in high nitrates on top of the tap. My tap is 12 and I was supplementing another 30 on top of that. My P is 0.6 and I was supplementing another 2 on top of that. These figures are nothing to worry about in the least.

I read you have a Cayman filter. Is this internal? What flow rate is it?

The brown algae in there is diatoms and as earlier suggested Shrimps or Ots will eat them however you seem to have trouble keeping GBRs alive and shrimp/Otos are IMO more sensitive than GBRs and therefore this could be a no go for you at this moment in time.

After reading all these other thread my personal opinion would be to forget all the plants stuff for now and address the fish dying problem.

If that has been sorted already and I missed it then forgive me. If we are at that stage then the CO2 needs sorting out. 8-10bpm is ridiculous to say the least. That will gain you nothing apart from more algae.

Then the macros need sorting out. If you don't want to mix your own then get the TPN+ and ditch the other brands you have. They state 'contains no N and P' exactly because of people like yourself. It is a major selling point to those millions in the wrong who are scared of Nitrates and Phosphates.

We can only help so much but it keeps coming down to the same advice over and over again.

No point adding the excel (liquid carbon) You have pressurised there and you're hardly using it.

As for the plants. The Fern and Anubias look OK except for yellowing on the leaves. this will most likely be macro shortage and maybe some trace shortage as these eat through traces.

The Stems pull them out and chop the healthy tops of then replant the tops.

Then do a decent water change to remove any ammonia that is brought up from the substrate being disturbed.

If your filter is an external then purigen could also be an option to remove organic sources of N. We then replace these with inorganic sources via TPN+ or dry ferts.



OK another couple of things I read that I can clear up.

No-one suggested you should only use 6 hours for the photoperiod as this is all the plants will need. It may well actually be that they only need 3-4 hours but we use 6 hours at the start as things get accustomed to their surroundings. Namely the plants get used to highlight@ 6 hours while they start to get adapted to the CO2 and nutrient levels.

Every adaptation means (exaggerated but close) that the plants stop growing, adapt themselves to the new parameters and start growing again once adapted. A little like superspeed evolution.

Plants prioritise things, they produce different chemicals within their selves dependent on the parameter they are in. this means every change in parameter stops the plants and algae can burst in. algae is a much simpler form of plant and doesn't have to take so much energy in gleaning its needs.

So plants have rubisco that they use in conjunction with CO2 availability. CO2 changes and they have to adapt their rubisco etc.

So stable and high (but safe) levels of CO2 and the plants do not have to adapt for CO2. There is more than enough (dependent on the circulation/distribution etc). This is the hardest parameter to sort in the planted aquarium. Lights we can change to lower or higher power. Nutrients we can just chuck loads in making sure nothing is defficient. CO2 is much harder because unlike the others it is a gas and wants to leave the water. Aim for the grassy green to limeade in your DC. This will be circa 100bpm (or nearly 2bps) or so on your setup but will take a couple of days of monitoring and micro adjusting to dial it in. I would suggest starting at 1bps and working it up from there very slowly monitoring the DC every 3-4 hours for 2 days.

Set the solenoid to start the CO2 2 hours before lights on and to turn off after 4 hours of lights. There is no need to inject for the whole period. It is these first few hours that are the key period.

Another I read was about 'photoshock' in that fish are 'stunned' by the sudden turn on of lights. I know there are many 'stories' on this subject and I also read someone saying it doesn't happen in nature. Are they sure? These are Tropical fish. They live in tropical conditions where the sky is full of black clouds for periods to be replaced by clear blue skies for a period and so on.

They are used to having dull light (ambient) and then suddenly the clouds break and its blinding. Not too sure they all get shocked in their natural habitats from this occurence. Maybe its true but I don't buy into it.

Then we go onto the case of LEDs to subdued LED lighting pre/post main lighting. Well my main lighting is actually high power LED but I do have subdued blue lighting too in the form of Cold Cathodes. They aren't there to avert 'photoshock' They are there because I have 24/7 simulated lighting. I have the main lighting staggered in 5 series to turn on from left to right as in the sun rises on the left and then the next series etc every half hour until the whole tank is lit up for 5 hours, then the process repeats apart fro it turns off from the left i.e. the sun sets on the right.

The blue cold cathodes switch on juts before lights off and switch off just before lights on. This is through thw whole of the 'night' period. I like to watch fish in these conditions. fish have different behaviours at nigh time as do plants. I like to watch these different behaviours and also see the plants curl up etc. Again. I have my lighting setup staggered this way because I like it that way. Nothing to do with natural behaviour of the fish or avoiding 'photoshock'. Its me being a poser if you like. More truthfully it enables me to reduce lighting on the tank to exactly what I want. I can also raise or lower my lighting (height not power) to reduce/increase light.

The final one is the statement 'electricity and water don't mix. Pat on the back for your Mum because she is right, however LED and the cold cathodes are DC not AC. In my orginal hood (similar to yours) I had a cold cathode tube break from its silicon and fall into the tank before. completely submerged including the wires leading into it. Didn't spot it till the morning when I saw the mollys grazing off it.

Now thats not to say that you won't have problem if an exposed wire gets to the water but I can say this.

If I re-wire something that is AC and plugged in I will get a violent shock. I've done it a few times because I'm stupid or maybe I kjust enjoy the buzzz<------scuse the pun)

However I rewire something DC no shocks at all.

I have to counter the above with the fact I am no electrician and cannot couch for the above being fact rather than luck but those are my findings when dealing with AC and DC.

AC
 
The fish are very healthy at the moment since I had wrongly diagnosed the tank issue has being a microscopic parasite when it is a crustacean anchor-worm. The anchor worm is still causing an issue since the medication I used to kill it off as killed some of the beneficial bacteria in the filter resulting in low level ammonia readings. So as you can imagine, knowing I have a mini-nitrogen cycle is causing quite a bit a stress.

You're right that I'm anxious to take new advice and I'm not quite the right person to be told one thing by one person/establishment and completely different thing by another person/establishment. It causes a hell of a lot of confusion and stress.

You are saying 10-12 c02 bubbles per min is not helping the plants, whereas the instruction manual states otherwise. Well, who is right? I stuck to following the manufacturers instructions because I've heard once that turning the c02 up can cause fish to gasp.

I do have an internal Cayman filter but the water flow rate is not adjustable and the manual doesn't actually tell you the litre per hour rate. All I can tell you is it's a Cayman 05 internal filter and there is ample water agitation.

As for the macro-nutrients, I've added some Nitro/Fosfo today. Due to the recent faecies/food build-up in the substrate (which I was told to thoroughly Vac to remove anchor-worms), I trust that there is 2.0 ppm of phosphate in there. Would adding more be detrimental? Some establishments seem to think 2.0 ppm is a trigger of algae you see, but when I come on here I'm more or less told those establishments are blatant liars in claiming such things.

I've also added 10ml of Pro-fito and since you're now saying there isn't enough c02 being added, I've supplemented the c02 addition with 2ml of Easycarbo.

I want to be able to have a tank that doesn't have fast algae build-ups. If I get my c02 levels sorted and add ample amounts of micro/macro-nutrients and add 2-3 fast growing plants, is there a good chance I'll be able to keep the algae at bay? Only one of the plants is a fast-grower in the tank so I guess thats not helping things.

edit: what level of c02 should I be aiming for in mg/L format? Unfortunately I've never assessed it's concentration in bpm, nor do I know what that means.
 
I completely understand the anchor worm stress. This is one thing I would get right before trying to take on the algae. Concetrate on one thing at a time, get it right and then move to the next. Algae is there at the mo, sort out the worms, then after you're sure its clear then you can move onto sorting out the algae.

The worms are most likely why you saw the gasping too. Nothing to do with O or CO2. I would question wherever you bought your fish as these are in almost all cases fish to fish transferred. Were they there before you bought some plants?

DO NOT use something like Interpet Anti crustation and parasite as that will kill off your beneficial bacteria in the filter.

Use Waterlife Parazin or Sterazin. This is fish, bacteria and plant safe and is a week long course if I remember rightly. Also bio-degradeable so it won't need flushing out after and the best thing is it won't stain your tank like some other meds such as Methylene Blue.

I personally would be using a Formaldehyde mix but that is pretty dangerous both to user and fish tank if wrong. Therefore I won't suggest that.

There are some good posts on here for anchor worms i.e. the procedure of a bath, then when the parasite is dead, removing the parasite with tweezers (yes with the fish out of the tank, then dabbing blue on the wound to help it heal.

You're right that I'm anxious to take new advice and I'm not quite the right person to be told one thing by one person/establishment and completely different thing by another person/establishment. It causes a hell of a lot of confusion and stress.

Indeed, however the way a planted tank deals with some parameters is totally different to non planted. What can prove deadly in a non planted tank can be a minor worry or even not a worry at all in planted.

Its trying to point out that they are 2 different systems is so hard. People have learnt rules and then all of a sudden the rules have changed. How can they change? Why have they changed? after all the only difference is that there are now plants in the tank???

You are saying 10-12 c02 bubbles per min is not helping the plants, whereas the instruction manual states otherwise. Well, who is right? I stuck to following the manufacturers instructions because I've heard once that turning the c02 up can cause fish to gasp.

Sounds better than them lasting a few days. I hope it isn't one of those little 95g cylinder sets for your sake.

Manufacturers make equipment, they want to sell it to you, they market it to make it attractive. If those cylinders will last a year they will suggest X rate. If you then go and say Mr X tells me that the bubble rate is ridiculously low they will say Do you believe Mr X or a laboratory full of scientists and researchers!!!

This happens all the time in this hobby. Aquarium lights are specially designed to a certain spectral graph that plants need. YEAh right. Why do people who use shop lights still achieve the same results? Why do those who use nowhere near the 'pink plant growth K' get great results? I don't use pink, mine are pure white.

Why do drop checker instructions, whether they be from the Far East or from the companies with huge plant product ranges, suggest to use tank water? You will not find any of us using tank water in ours believe me.

Check out how many 'plant specialist' manufacturers promote heating cables. then check out how many hobbyists (and some of the most respected within the hobby) say Pffff Claptrap.

If someone is selling then they will market the item. If a scientist says there is a slight chance something may work, then a marketing department for that product will say it DOES work and IS DEFINATELY necessary. We could fill an entire sub section of misleading adverts.

The first 10 pages would be blurbs from hundreds of ferts that say 'contains everything the plants need' and then goes on to say' contains no N and P so therefore does not promote algae'

They put this statement on because at the moment there are still more believers in the NP causes algae than those that don't so they will sell more.

There are 2 problems with that blurb.
1 - It says it contains all the nutrients plants need when it doesn't. Plants need N an P.

2 - N and P do not promote algae.

When you look at something read the blurb, then research. That is a problem in itself because there are some that will agree and some that won't. Hard to tell who is clueless and who knows. Therefore search place like the barrreport, UKaps, TFF. You may get some dodgy replies but nearly always someone who has a full(er) understanding of the latest thinking will arrive in the thread and set the record straight.

Even then the 'latest thinking' may well be wrong but it will be further along the path to a conclusive answer than the former beliefs and of course thinking and science is always moving so what we think is right now may not be right tomorrow. There is no such thing as a conclusive answer as more and more research and study adds extra into the path and we move further along. If the conclusive answer is ever reached there will be no such thing as science anymore :) Will this ever be achieved?

The only thing the CO2 kit manufacturer's instructions get right in the above statement is that turning the CO2 up too high will always make the fish gasp.

Yes it will suffocate them. Its nothing to do with O as some will say. It is purely suffocating due to the level of CO2.

Unfortunately for them they then fall apart as they can have no idea how efficient your system is nor the parameters. They should not be trying to suggest anything on rates because they cannot possibly design an 'average' when we are talking many different sized tanks with many different setups.

However what you put into the tank is not necessarily what you get out of it. this is a gas. If we forget about which kit it is and just consider the tank as a car (meaning the filter, circulaiton etc)

So if the filter, circulation are top notch then we'll call it a Ferrari. If the filter and circulation are poor we'll call it a ...... not so good car (don't want to upset any Renault owners.ooops) Now if you put your foot down to the floorw in a Feerrari you are going to get a much faster speed than with the ....Renault. That is if the Renault starts at all.

So If you inject 120bpm and I inject 120bpm then you may get not much change in you DC (i.e. not much increase in CO2 ppm)where I may be pudshing too hard and kill my fish. This can of course be the other way round too. this is one of the joys of planted. We can tell you how to setup the best planted tank. How to achieve the best results. How to perfect it. However you have to take that in and tweak a few things to suit your system.

I do have an internal Cayman filter but the water flow rate is not adjustable and the manual doesn't actually tell you the litre per hour rate. All I can tell you is it's a Cayman 05 internal filter and there is ample water agitation.

It has a flow rate of 350lph (link below.) Nowhere near enough for your size tank planted. I use a 200lph on my 10ltr. You need something in the region of 700lph or more. Something like a Fluval 3+ or 4+ would be much better.

http://www.ferplast.com/bluwave_eng.php

As for the macro-nutrients, I've added some Nitro/Fosfo today.

Good but forget their talk of ratios. Just dose it. Someone else may use these products and be able to suggest quantities. You can always do larger water changes to remove excess if you're worried.

Your statement earlier (maybe on a different thread) was a little wrong.

If 1 million people say phosphate causes algae, then 1 person who doses way above the level that is suggested (say 5ppm) does not have algae, then the 1 person has proved the 1 million wrong. If it is true then no tank with 5ppm will have no (almost zero) algae. That is how science works. It only takes 1 proven positive to break the theory.

Government scientists (those very highly paid guys) still to this day say that the fertiliser run off is the cause of algae in our ditches and rivers. However they don't take into account that they are constantly dredging all the weeds from these courses and disturbing the silt.

The undisturbed 'flowing' water courses like streams don't have algae? they are almost crystal clear. Those rivers through towns and cities and ditches alongside roads have to be beautified because its unsightly. They can't have it both ways.

So there you go. We can add 5ppm of phosphate, show you we have no algae and also show the governement scientists to rethink their statements. They won't though as it is an easy way to please the eco-warriors who campaign against fertilisers so suits a government goal of appearing green!!!

I've also added 10ml of Pro-fito and since you're now saying there isn't enough c02 being added, I've supplemented the c02 addition with 2ml of Easycarbo.

You're throwing money away here. Why add liquid carbon to supplement pressurised that is too low? Why not just increase the CO2 itself. The plants can use it much more easily than the liquid C.

I want to be able to have a tank that doesn't have fast algae build-ups. If I get my c02 levels sorted and add ample amounts of micro/macro-nutrients and add 2-3 fast growing plants, is there a good chance I'll be able to keep the algae at bay? Only one of the plants is a fast-grower in the tank so I guess thats not helping things.

For a beginner ....yes it is best to start with fast growers as they will grow up, fill out space and outcompete the algae. I on the other hand start up with all slow growers if that is my plant choice. I have confidence in whatever method I choose for a particular setup and confidence in my ability to correct any problems if any occur.

edit: what level of c02 should I be aiming for in mg/L format? Unfortunately I've never assessed it's concentration in bpm, nor do I know what that means.

bpm/bps is not a concentration. Its not even a measure of anything. It is a visual guide. It is so the user can count how many bubbles per minute/second are going through a bubble counter. Once dialed in they can quickly see if it alters. Also when they change cannister they have a fair idea of where they should be.

The concentration in mg/L is ppm (parts per million) 30ppm is the standard. It is recognised as a slightly conservative safe level in that it is almost the maximum of CO2 that you put in without the fish being affected at all. 45ppm (50% higher) may kill everything. You are looking for a colour of vivid grass green/limeade to reach 30-35ppm which is where I aim for and I am talking about a breeding tank with lots of shrimp too.

With that filter being so underpowered you are going to have some troubles with CO2 though. Not enough circulation. You wither need a better filter or to add a Koralia Nano circulation pump or similar. that pump would add 900lph and get you up to a better circulation around the tank.

Your is a 120Ltr. Mine is a 125Ltr. they are probably actually the same tank but the manufacturers have decided on a different volume.

When I was pressurised I had a 700lpg external filter and a Koralia1 making 2200lph turnover (makes your 350lph sound a little small?.)

However you've sen how heavily planted my tanks are. For the amount of plants you have you won't need as much circulation. I had that because extreme plantmass makes circulation difficult.

So get the worms sorted first. then think about the filter. Then think about the CO2 plants and the whole setup. You will be addicted once it gets working and your fish will love you much more :)

AC
 
Well I certainly learned something from those posts Coley and I was only browsing through! :good:
 

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