Smootherpete
Well-Known Member
I would like to upgrade my 600w hps digital ballast to a 1000w digital ballast and bulb. My question is this. Can I just replace ballast and bulb by 1000w ballast and bulb without changing the hood. In other words, can I screw a 1000w bulb into the hood that came with my 600w, do 600w and 1000w bulbs have the same size threads?