I have a 15 gallon tank that has been setup before. I let it sit for a while and restarted it the other day. I have a filter that is actually for a 30-50 gallon tank and it's cleaning the water very well, it's just kinda cloudy. I used Distilled water that works well in every other tank I've had and the 10 gallon in the living room is crystal clear. So.... there's no difference in what I'm doing. You guys have any suggestions? I already have an Albino Oscar, a Tiger Oscar and 2 Dempsey Cichlids in there (still really small) so I have to be able to do the solution with fishies.. Thanks ahead of time.