Hi all, I did a serious clean one of my community tanks last night. During that cleaning, the water churned A LOT. It became thick with sludge (what is the word for it? Moosh? Melsh?) Unfortunately, the White Clouds and Guppies began to have difficulty breathing I realized. Today, I see that I lost 3 fish overnight and one more is heavy breathing . I had no idea that the thick water could be THAT bad for the fish. Has this ever happened to anyone else? Where should one draw the line with churning the water? How can one avoid this? Is this worse with small fish? Anything folks have to offer I¹d like to hear. I don't want to cause this suffering again. Thanks Shango _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member