PFO pendants - height from water?

[Myka]

Originally Posted by sphelps

Personally I think 12" is too high for a PFO reflector on a 90 gallon, 6" would be better and I believe that is what PFO recommends. Remember when you're looking at light distribution diagrams, the 6" plot would be the distribution at the water surface which isn't that relative since your corals are obviously lower.

Good call on the plots Steve! I think 12" is too high too considering it is only 18" wide, but it's pretty easy for me to make the canopy to have adjustable height fairly easily and I would like to be able to see them at different heights. I was just taking measurements though, and I don't want my canopy to be overly tall, so I don't think I'm going build to accommodate 12" because that makes for a really bulky looking canopy. I'm going to build to accommodate 8", and go from there. I'm a bit worried about splash causing bulb breakage at only 6" since I don't have any glass between the bulb and the water...? I am planning that I will probably like them about 8", but I haven't used these particular pendants before.

My current DEs are like 2" off the water...hehehehe.