I have a 29 gallon tank with 2 goldfish right now. It also has an Anubis and 2 moss balls. Sometime this month the goldfish will move to the pond and I'll get tropicals. I'm planning on having albino corys, rummynose tetras, and an angelfish. Right now I'm dealing with a bunch of algae that keeps coming back. I do a water change when my nitrate gets high. Usually once a week I change 6-8 gallons. Ammonia and nitrite are always 0. The lights are on for 4 hours, twice a day. I'll scrub the tank and get all the algae off for it to come right back in a week. It's all over my Anubis plant also. My Anubis has a long stem straight up with what looks like a small rhizome on it. I think it is trying to grow a new plant. How do I control this algae? Will doing a couple large water changes and a blackout for a week of two starve it off? When I get the corys, will they help control some of it? I'll post pics of the algae and Anubis plant when I get home tonight.