Quote Originally Posted by apedroza View Post
Then you definitely want to go MH. The size will depend on the size of the tank. I have 2-250watt SE MH lights with lumenarc reflectors and 2-36watt HO t-5 actinics on a 70gal.
I'm about to do the same over a 75 gallon with 30 gallon sump. Do you run into any heat issues? Do you run a chiller?