New Tank - Avoiding Algae

junco

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Hello all,

Just joined. Looks like a nice forum. I did a planted tank a few years ago and it ended sadly in algae bloom which I could not get a handle on. I'm determined to do it right this time... so I seek some advice.

I want to get this right from the start so I need some help from you veterans. My setup is a 30 gallon tank w/ a 110 watt compact flourescent light and pressurized CO2 injection system. I'll be using soilmaster as the substrate and have only a few fish.

1) Lighting: The light hood came with 9300K bulbs. I want to avoid algae, so what K should I get? I read in the above pinned topic that algae like the high K bulbs, so it's best to avoid them. I'll have 3.6 WPG with this setup and another twin tube strip light too I could add to bump it over 5 WPG if I need to, but to start I won't have that I don't think. And recommendations where to get these bulbs online?

2) Fertilizer: Without many fish, are ferts more important? With so much light, is it required to use fertilizer to avoid algae growth?

3) Filtering: I saw biological filtering mentioned as something important to avoiding algae in the pinned topic. I was planning on only using a powerhead with a sponge attached to it's inlet as a filter since I won't have many fish. This is what my local fish store does in their planted tanks and it seems to work. Will this be good enough for biological filtering or should I look into something else?

4) Heat: does temperature affect algae growth? Ideal temp for a planted freshwater tank?

After I figure out the above questions, I plan on planting a lot of fast growing plants initially and after a week turning on the CO2 system. Please let me know what you guys think about all this, thanks! :)
 
Hi junco and welcome to TFF!

Algae is probably the no. 1 reason potential planted hobbyists are put off so I admire you determination to get it right this time.

1.As long as you plant heavily with fast growers (as per the pinned thread) and keep CO2 stable at 25-35ppm then your lighting colour temp. shouldn't matter. The exception is if it has some actinic output i.e. designed for reefs. Plants are generally unfussy re. spectrums etc. so long as quantity of light is sufficient.

2. With your lighting and CO2 (and consequent plant growth) you will definitely need to dose fertilisers regularly. The Estimative Index (EI) is very effective and cost effective. For an idea then check out the pinned thread here or for a good overview here - http://www.barrreport.com/forums/showthread.php?t=2062

3. External canister filters are regarded as the "standard" for planted tanks, especially your size. However your filter technique may work well enough. Avoid excess surface agitation as this will drive off valuable CO2. Submerged spray bars are an effective way to distribute/circulate water/nutrients.

4. Not too sure about temp vs. algae growth. What I do know is that poor plant growth leads to algae. Look after your plants and algae won't be a problem. Neglect them and watch the algae grow! Most planted tanks are kept around 25C/77F.

Why are you waiting until after a week to turn on your CO2? Get your CO2 sorted first. Poor CO2 causes algae.

Best of luck.
 
Thanks for the quick reply! I just discovered all the EI info after I posted this, so I've been busy reading up on that. I'll definatley get some chemicals and employ the EI technique.

I was under the impression that for about a week after planting, plants are kind of in "shock mode" and aren't really doing anything, thus I'd have an excess of CO2 not being used in that first week. I'm really scared of getting algae and I'm trying to take every possible precaution.
 
Use simple precautions like a low Kelvin flourescent light (Lower than 10,000K), keeping it away from natural sunlight, and proper filtration. High nirate levels produce more algae because that's what algae feeds on. Using an algae scraper helps, too. You can find them at any WalMart, PetsMart, or LFS. I bought one from PetsMart for onlt $4 and it works great.

There are various algae chemicals you can put in your tank to fight algae. I have some that is supposedly plant-safe, although I've noticed them getting a bit brown around the edges.

If you have a little algae, don't worry! It makes it look more natural. Just be sure to keep it under control. :)
 

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