Apr 28, 2014 #1 mr tooheys Aquarium Advice Newbie Joined Apr 28, 2014 Messages 3 How long do you leave your sump light on
Apr 28, 2014 #2 BigRedsReefs10 Aquarium Advice Addict Joined Dec 25, 2013 Messages 5,093 Over night on an opposite light schedule of the dt