I still can't get rid of my diatoms problem, i've removed my bioballs this last week and am hopping this is going to help, but at he minute it seems to be getting worse. If i can't get it to clear up in the next two months i'm going to sell the lot. I really don't want to cause i love my reef but it is so depressing coming home from work every day to see a tank full of brown slime..... If any one has had a servere case like this or any one knows anything about it plese help me as i'm at the end of my tether.....