I have this Aquactinics fixture basically new; besides firing two Iwasaki bulbs for a tank shot, it has seen no action. Took it home to place it over my tank, installed two T5, two brand new Radiums BUT THEY DON'T FIRE !!! I'm so frustrated. Ballast is the stock M58. I just placed back the Tek fixture and stored the MH away maybe for couple years more.