beans_for_me
New member
I have a couple sun system 400hps ballasts. I want to go to a C13 for awhile. My ballast says max w is 400 but not "use only 400w bulbs". So I am wondering if I need to buy a new 250w ballast for my C13 or if I can just plug a 250w bulb into my 400hps ballast and have it run as safe and efficently as a 250 would.
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