has anyone had a problem with the fish in an acrylic aquarium? Reason I ask is I picked up a small one (10 gallon) for my son's fish (Serpae Tetras), the tank had completed the cycle and we introduced the fish into it. In a matter of days the fish paled drastically and were crowding into the corners (bow front tank) acting very odd. So I wondered if maybe there was something wrong with them, I put them over into our quarantine tank (another 10 gal only this one glass) by the next morning there color was vibrant and they were schooling all over the tank. We left them in quarantine for a couple of weeks then moved them into our larger tank were they are still behaving normally and color is still very bright. Now since the tetras were removed we picked up a few Cherry Barbs for the Acrylic tank, they did well the first day and then repeated what the tetras did, paled and clung in the corners, and now they are showing signs of Ich

. Ideas or comments on this problem?