I'm a new member but I'm not new to the forum, I have been reading everything I can on this site for a very long time, and the advice given here is invaluable, so thank you.
I am having a problem with algae in my tank. It is a 55 gallon, dirt substrate with a gravel cap, no co2 and no ferts, in fact the only thing that I have been putting in this tank is water to top it off and food. Livestock is 20 neon tetras, 100+ rcs, 6 assassin snails and a seemingly infinite number of pond snails. It has been set up for about six months now. I really want to keep it as low-tech as possible so I just finished reading Dianna Walstad's Ecology of the Planted Aquarium. As far as I know I am doing everything right, but I still can't get rid of the black hair algae. I think I have narrowed it down to either insufficient plant biomass or lighting. The lighting is 4 x 23 watt 6500k cfl about 4 iches above the water for 12 hours a day. Thoughts on that? Would you consider it to be heavily planted? Or is there something else I'm missing? I also read recently that one of the main causes of a BBA outbreak is unstable co2 levels. I am on week 3 without a water change since water changes cause fluctuations in co2 levels. Any advice would be great.