Well as far as temp issues, none what so ever. Now I have seen these on several tanks locally and the SPS growth is wonderful. This is basically how i look at it. I previously had 2 AI Sol Blues so I had 48 x 3 watt cree LEDs. The 160 Watt Razor has now without looking at the diagram I believe its 42 x 3 watt cree LEDs and then 6 Epistar UVs , the uvs are high output as well but I could not find much information on them.
Now with a canopy this is what you can do. There are 4 holes in each fixture that you mount the hanging kit to. I would simply recommend getting longer screws, get a spacer of some type. I talked to Coral Vue yesterday he stated the only time he has ever got a fan to kick on was when he sat the fixture on a table upside down. Basically starving it of air.
Im gonna take some pics in aprox 2 weeks to show coral growth. However I did notice even right after the switch it seemed things were happier with polyp extension. I think this might be due to the fact that the fixture has more colors in it.