Just make sure you can either get access to your reflectors, or you can remove them twice a year for cleaning. I take mine off and I remove all the electrical components, then they get a shower, and are cleaned with alcohol wipes to avoid finger prints.
I couldn't remove my reflectors on my old 230g system so I had a piece of board that I would put over the top of the tank while I cleaned the reflectors by hand, and then wiped them down with alcohol wipes again. I vacuumed the salt droppings off the board afterwards and took it off the tank. I also used pieces of PVC to keep it a few inches off of the top of the tank to allow air circulation.