Youd be better off selling some of the led lights and going to couple 400 or 600 watt digital ballast with switchable watts ie from 250 watts to 600 watt. The leds use less eletric cost 4 times more then hid ballasts but yeild is about half as much with buds much less dense . The leds also grow slower so in the long ruhid lighting is more cost effective, larger yeilds, and better dense buds. If you have the money then you could go to sulphur lighting which uses less wattage then hid but quadruples the lumne output.