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Anyone here ever built a canopy for MH bulbs?
Posted By: Gareth Dominy <email@example.com>
Date: Thursday, 28 November 2002, at 7:18 p.m.
I'm replacing the lighting over the 135. This is the first step before getting CO2 installed. I'm serisouly considering a pair of 250 watt Iwasaki bulbs (6500k, 90 CRI). I've already got the reflectors figured out, but I am concerned about heat.
I will cool the canopy using fans, however I need to know how much internal air space would be optimal for the canopy, and how far away from the glass lids should the bulbs be?
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