depending on what softies, but running 2 bulbs should be close to enough, if you want to graduate up to sps, and other slightly more difficult corals, i would go up to a 4 bulb system, for the 4 bulbs i would go 10k, 20k, 2 actinics 460nm and i forget the other one i use, for the 2 bulb, a 10-14k and an actinic would be plenty