Well if you mean the reflector is 8 inches off the water than the bulb would be 12 inches, which should be fine for a 2x2 foot area - have them closer together than exactly centred. If you can go higher the better. You have to account for coral growth down the line. Raising lights for growth is something people often overlook. I would go with the minis. 
__________________
156g - 2-400W 12K Reeflux Bulbs - CV Ballasts - 2 Large LB's("every inch counts..."), VTech MP40W, mjmod 1200, Reeflo Dart, Octo DNW-200 w/ mag7, Eshopps 37g sump, RK 2, Ltrmtr + 1 for top off/alk-ca
|