Air cooled lighting; efficient or inefficient?

bigskymtnguy

Well-Known Member
I'll stick with air cooled, sealed 1000 w hps for flowering. My veg room seems to stay cool enough running two 1000 w open MH, tandem connected on a single light mover. Then again, I never run them when it is over 75 degrees outside. Outdoor rules in summer!
 
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