Hi guys, I'm going to grow for the first time in a little while and I'm just going to start with one plant. I was thinking about buying two 35-watt MH lamps and two 35-watt HPS lamps. The two MH I would use during the veg stage and the two HPS I would use for flowering. Is 70 watts enough for one plant? Also, how much can I expect my power bill to increase from 70 watts and 2 fans?