I'll take a look at IR as much as I can. My spec measures up to 1,000nm.IR from the sun penetrates 3-4M in the ocean at high noon. That is not a lot, but nearly nobody has tank that deep, but lots of corals come from those areas? Any idea how much the IR from a typical MH would penetrate into the water? ...if it is just a few inches, then all of this might be just academic. If it can hit most of the corals, then those who have always supposed that IR mattered could be right...
I am going to have to change my rhetoric about IR waste. My many thanks to all of you.