The light is a Sifligoi XR4, with the acls running the all of the bulbs.I have no idea what ballast they run in the acls. I am looking at the new XR6 with the acls for my softie reef. The new series of acls have both the metal halide and the T5HO's dimmable. Mine only has the mh dimming function.

lookin good Jay,

I can see a few of those masked gobies in the pics, they are a sweet fish.

Makes me want a few for my own tank.