Algae Problem - Can You Help?

fluffycabbage

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Ive copied this from James' algea guide:

In a high light tank it is an indication of low or fluctuating CO2 levels or not enough water circulation around the plants. In a low light tank it is often due to changing CO2 levels.
Removal In a high light tank you will need to increase your levels of CO2 and/or improve water circulation around the plants. Scrub and cut off as much as you can first. Increase levels slowly to 30ppm or more but watch the fish to see if they are respiring heavily. Make sure you have good water flow around the whole tank along with some good surface movement. Adding a powerhead may help.
If you have a low light tank without CO2 injection then not doing any water changes will help. This is because tap water often has lots of CO2 dissolved in it which causes CO2 levels in your tank to fluctuate. The algae respond to this a lot quicker than the plants do.
Siamese Algae Eaters are known to eat BBA so can be used to control this algae.
Overdosing Flourish Excel will clear it up.


Ok, i have 2 x 38w tropical tubes in my 200l tank - is this high or low light? This algae started when i turned the temp up to treat whitespot - ive started to turn it down now. But there is quite a lot of it. Its a newly planted tank (oldest plants are about 6 weeks old)

Is this the plants settling? To do with the temp rise? I have added a fluval 2 plus at the other end of the tank just to improve flow a bit, filtration seems fine though, nice clear water and good stats.

Should i go ahead and just chop the plants down which have algae on them?
 
I would say that the light is OK. However if you are treating whitespot I am hesitant to suggest anything like not doing water changes ;) or adding liquid CO2 for a while.

AC
 
what kind of Algae is it? I'll put money its diatoms (brown) algae?
 
Oh sorry, Its black brush algae. Ive just turned off the air bubbles coz the temp is back to 26 now and they havent had meds for a few days. Ive moved the fluval so its getting to a little dead spot behind the amazon sword. But most of the algae is around the main filter and on the vallis.
 
Oh sorry, Its black brush algae. Ive just turned off the air bubbles coz the temp is back to 26 now and they havent had meds for a few days. Ive moved the fluval so its getting to a little dead spot behind the amazon sword. But most of the algae is around the main filter and on the vallis.
how many hours a day are your lights on ?
 
Oh sorry, Its black brush algae. Ive just turned off the air bubbles coz the temp is back to 26 now and they havent had meds for a few days. Ive moved the fluval so its getting to a little dead spot behind the amazon sword. But most of the algae is around the main filter and on the vallis.
how many hours a day are your lights on ?

hmmm, about 5 hrs then off for about 3 then back for about 4. ish. too much at the mo? it was fine before the temp went up, no algae, same amount of light.
 

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