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Sanjay, I know this one may be a tough one to answer, but here it goes.
I am in a situation where I will have a glass shield on a SE MH set & expect to loose some 15-20% of pars. The only advantage I have to combat the loss is that the fixtures will be directly on top of the tank, as opposed to the normal 6-8 inches above the tank that we see. How much more pars do you think are gained by having the MH directly above the tank?
When you perform your plot tests, how far away from the bulb do you normally take your measurements?
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90g AGA/RR/BB, 30g sump, Aquactinics 2x250 (XM20K)/2x54 T5 (AB & B+), Eheim 1262 Return, Deltec AP600, Tunze 6060 & Osmolator 3155, Homemade 2 part
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