Did you clean and presoak the pipe before putting it in? They can leak out chemicals if not properly cleaned. It's usually not enough to harm the fish but some fish react differently than others
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i cleaned it but that's it. it hasn't been in the ck's tank for over a month. He only eats at night now so hopefully he is bouncing back. i think it was do to my jack dempsey and jaguar cichlid which aren't far of the ck for size and bullied him but they've been moved to a new tank.
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