i am all out of ideas, my water is getting nasty. Its looking more green every day. there isnt any algae on the glass, cause i cleaned the glass like a week ago. Ivwe done water changes, ive changed the carbon, i cleaned the styrafoam sponge, i dont leave food in the tank, and the water wont clear up. The water just started getting nasty about a week and a half ago. Anything else i can do? just throw out some ideas please. im going to take a sample of the water to my lfs, but i test the ammonia myself, and its fine.