Something strange is happening, my tank is in the 7th week and finished the cycling stage. Parameters are Ammonia 0,Nitrite 0 and Nitrate less than 5ppm. My water turns cloudy about 5hours into the darkness and I wakeup its cloudy, but it gets crystal clear about 4 hours after the lights are on. I am not sure what's going, not sure if it's a bacteria bloom or not, because it keeps disappearing during the day, when the lights are on the turns crystal clear so its weird. Anyone ever experience this ? if so how did you solve this problem? Please help, I don't want to push the panic button just, yet I know patience is the key but I have never seen this problem before. Thanks in advance to anyone who contributes.