i got a new royal gramma. He’s been in QT for 5 days with the light off. He seems to be healthy and doing good. Today, I decided to turn the light on. He got scared and after 15 min he was laying flat on the bottom of the tank. I was worried I killed him. I quickly turned the light off. About 5 min later he was swimming around acting normal. Should I not run lights in the QT?