hampsterblade
New member
Every night when the lights go out I find my clowns floating at the top of the tank, almost as if they are dead. When the lights come back on they go back to their normal behavior. Is this normal or is it because of high flow? The tank is a 55G. Nitrates < 5 ammonia 0 nitrite 0 flow 620 GPH pump from sump up 3 feet. 1 200GPH power head.