bob0
Aquarium Advice Newbie
In most of my tanks the fish have been rubbing against the rocks and sand. The water parameters are good. There seem to be a lot of "colonies" of something on the glass. Whenever these get worse the fish are more insistent about the rubbing behavior. The last fish I lost also exhibited tail wagging and clamped fins, but didn't porcupine like dropsy. I can usually stem this behavior by scraping all of the colonies, but this never completely eliminates the problem. I am not sure what disease is causing this. It seems to be related to the numbers of infusoria in the tank b/c when there are babies in the tank the parents stop this behavior. How can I get rid of it?