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- Jul 12, 2019
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You really don’t need to worry about too much par with MH. I would say keep the light 12-16 inches off the water.Thanks so much for the pictures! my question with the 250s is would that produce too much par over that size of an area? And also, what is the difference between single ended and double ended? Say a single ended produces less light (I have no idea if that’s correct) then going the 250 route (due to my concerns about too much par) a single ended would be the better option?