Hey all, do any of you use the 400W Hamilton Cozumel Sun MH Pendants? I'm trying to figure out how high I can get away with mounting the light above the water line and not lose too much PAR...
I have 10 foot ceilings and the tank rim will be at 6 feet, so water line a couple inches less. Do you think I'd be able to hang them 3 feet or so off the water without issues other than light spill?
The rationale is, I have three of these fixtures to cover 120"x48"x48" of tank, and I'm not sure if I'll be able to get my hands on a 4th fixture for more coverage (have been "Out of Stock" for awhile now, I'm assuming they may not be being made anymore...).