WOW! They definitely look like something you'd find in a public aquarium! I'm sure you had no problem growing corals with those things! I'll have to read up on them a bit.they are these Maxspect 500 Watt monsters. Maxspect
I picked them up originally second hand to see how well they would grow coral, and quickly realized they are way too much light for anything other then something like the 600. When turned all the way down they draw about 30 watt each, which is more then enough for growing fish .