im not sure, but for the first 2 or 3 weeks, use your cfls, and then when you have at least 3 set of true leaves, throw in the MH, and u can still put your cfl's to light every angle of the plant. just be sure to use a good fan.
smokeallday Reviewed by smokeallday on . MH vs. CFL for veg stage what is preferrable... 1 250 watt MH or 6 40W CFL's for 2 plants going through veg stage? Rating: 5