can some one help, I have a micro mini system 100watt HPS IF I leave it on 17 hours aday for one month, approximately how much more will my electric bill be.
Depends how much your electricity company charges you, for me i have abolut a total of 150 watts, and they dont charge me alot. I think it added like 5 bucks on . Nothing even close to noticable. Just if you are worried about it. Go out and replace all your light that you use alot inside, besides for the grow, with CFL's they will save you money on your power bill and keep it about the same price.