Yea its an ok fixture. It won't support all corals, no. SPS would have a hard time with that lighting, its not enough. Because its using 2 white 39watt lamps and 2 39 watt actinics, that does not put off a huge amount of light. Maybe a 6 lamp fixture using 4 10-12k lamps. White lights should be on for 8-12 hours, and the actinics for around 14 hours. Actinics come on before the whites and go off after them. You could keep LPS and Soft corals. Not clams or SPS.