yeap, just one hour a day. Set on a timer for when I get home from work. The rest of the time it's white moonlighting and ambient light from the room. I have track lights on the ceiling pointing at the tank if I what to light it up without firing up the MH's.NOLAGT;2305213; said:He is using MH lights but he only runs them for a little while. I asked the same question a few pages back.