i agree with king cola on all that advice.
how far away depends on the srength of your lamp. most commonly used lamps are 250 w 400 w and 1000 w. i use a 400w hps and it needs to be a good 18 inches away from the top of your plant. hope this helps.


if you can afford it get a metal halide for veg and hps for flowering..
jolly green giant Reviewed by jolly green giant on . HELP! Hi, before I start talkin shite you should know that I am a complete fuckin amateur at this shit. I've just bought some seeds and want to start growing and just need a few questions answering. Which are the best lights to use, hps or hid?? How much light does a cannabis plant need in a full day? I have white widow seeds, will it kick out a real stench in the house? what should the distance be between the light and the plant and at what stage shall I start giving light? Rating: 5