I have a 6' long tank with 3 glass tops across it. It makes the tank much harder to clean since I have to move 2 sets of lights to move the glass tops. I cannot get my hand to the back of the tank to grab debri without moving those glass tops. So... Do you guys/gals have glass tops? Do you just run the tank without a top? My lights currently sit on the glass, are they OK to hover over open water? Sounds iffy. My other concern is my 3 year old son, but he is not around the tank much. I do have (2) rope fish, they might enjoy the top off as well as those buggers are escape artists... The lights I have are the Nova Extreme 2' long 45 watts. Thanks!!!