I have gone through two ballasts on this cube. It is only 8 months old. Would the Aqualight Advanced Hang-On Tank Mount HQI 150W 20,000K from Coral Life be ok for this tank. At the moment I have rigged up a set of lights from an old tank, (2) 55 watt power compacts. When I dropped back to a small tank I decided to keep only softies. I traded in all of my hard corals. But I would like to add some hard corals back into the tank. All suggestions would be appreciated.