Water clarity has nothing to do with water quality.its by Buddies fish and I think the tank was like 135 or something. No Idea how much he was feeding and I am not even sure he was keeping it supa clean. When I saw them the Tank water was TAN in color. Maybe - it is a combination of things, feeding, tank size, cleanliness ??? He is moving her/them into a larger tank and I think they will start getting more attention. we will see if that helps.