I use the Aquaticlife brand on my 800 gallon. two 60'' T-5, 4 lamps plus led's. IMO they are some of the best lights I have ever owned. They have built in fans and timer, set and go. I Never have to touch my light again. They provide plenty of lighting and they are hung from the ceiling about 18'' above the tank and still provide great lighitng for a 4' deep, 3' wide tank.