Dec 3, 2013 #1 Ethan7474 Aquarium Advice Regular Joined Dec 1, 2013 Messages 98 Do I leave the lights on when cycling a tank?
Dec 3, 2013 #2 TheTodd Aquarium Advice Addict Joined May 26, 2012 Messages 3,111 Location Palm Springs, CA It does nothing to have them on except possibly creating more algae.
Dec 4, 2013 #3 Serafin Aquarium Advice Activist Joined Jan 16, 2013 Messages 142 Yeah leave them off and save on the electric bill