hello everyone first time to post but i found it kind of relevant so here goes.I bought something called a flipper off of e-bay a few weeks ago I run two 600 hps in seperate flower rooms I use one ballast and two hoods,one 120 volt timer the lights run 12/12 on 240 pulling 2.6 amps the flipper is a relay that switchs the power between lights and doesnt leave a up and down fluctuation cost 100 dollars runs on 120 or 240 and i get to keep my other ballast as a spare so in reality its like running 300 watts 24/7 iwent through my house and changed every thing to floros so ifeel comfertable with the power draw and get to harvest every 4 or 5 weeks.First post been reading this site for about a year got to say i love to read StinkBud and Natmoon and a couple of others im to high to remember right now.Hope this helped some one.