Thanks Technowledgy. They are expensive and since I am replacing a
PC light I probably won't see any energy savings in the cost of running the fixture. The fixture itself has a temperature readout and the hottest I've seen it is 86 degrees. I think that most of this dissipates before it reaches the surface of the water, I can't feel any heat when I put my hand under the light. Thinking about it, I haven't heard my chiller come on since I got my Solaris. It uses nearly 400 watts when it runs so there are savings there.
Of course, like every other reefkeeper I have found that I want better growth from my corals. That would have meant upgrading my lights to
MH, which would have used more electric and produced more heat.
