I don't know what's wrong. My flowerhorn is 4" and right know he is in the hospital tank. Because for some reason every time he is in the 55 gallon he starts acting weird. He starts being scared, hitting himself, sitting at the bottom of the tank. I have test the water and everything is okay, temperature is 82° and his filtration canister is a fluval 405 so i know he has good filtration and then he has a sponge filter, he has gravel, not a lot. Then he has new LED lights. But when i do put him in the hospital tank that is 10 gallon. He is perfectly fine. He comes down and he slowly start coming back to himself. So i don't know what's wrong. I think he might not like the LED lights. So please someone help me. Please