the only thing you have to worry about is the heat, summer is here. here is a tool that you can check to see how much it would cost running your lights. hope this helps.

http://www.advancednutrients.com/pow...powercost.html
mobay Reviewed by mobay on . risks? I was checking up on 400watt hps grow light kits and it shows that it will up your electric bill about $20 per month. I was wondering if this should be something to worry about and if so, what would be a good decoy electrical appliance that could make up for the extra $20 a month on the electric bill?, thanks. Rating: 5