600 watt bulb is too vague of a description, is it CFL (compact fluorescent), HPS (High Pressure Sodium), MH (Metal Halide), Incandescent (standard home bulb)?

If your only starting them inside for a short period, all you need are cfls; the little spiral bulbs you see being advertised as much more efficient, which they are. I'd say minimum 1 per plant but more would be better. Usually they're around 23 watts or so each the ones you find in stores like walmart and other alike stores.

If its possible, it'd be really helpful to find out what kind of light you have exactly. Chances are even if its the right bulb your seedlings won't need the massive amount of light 600 watts will provide (young plants are sensitive to the extreme light and conditions hps and mh systems provide)
Smoketobehappy Reviewed by Smoketobehappy on . How much light after germination? Im growin weed for the first time, im living in ireland and as every1 knows we have a pretty shitty climate:mad: i have my seeds soaking now and i will be starting them off im cotton woll tomorro, i intend to grow outside but obviously not for the first month, once they have germinated and are planted, how many hours light do they need for the first few weeks while they are indoors? any tips for first time growers welcome as i genuienly havent a clue:rasta: cheers lads:rastasmoke: Rating: 5