Clyde Hammond
Member
I've just got my grow room setup and I got my seeds in the soil last night, I'm running a 600 watt lamp in a 3x4 closet. Later once things get rolling I'll be adding some supplemental cfls. It is a dimmable ballast/light so I have it on 75% power so it's running around 450 to 500 watts sounds about right and about 18-20 inches from the top of the cups. I'm wondering if that would be a good enough start or if I can lower them any or should I raise them? Thanks.