Quote Originally Posted by joe86el
well maybe that ''half of everything'' will be negotiated + he thinks im just goin to grow 10 plants wheras im gointo shove plants into every swuare inch of space so he'll be happy with 2-3 oz. Ye im thinking a 400w envirolite, im going to sheet out the attic with ply, section it off with that black plastic stuff, available in B&Q ?????. going to buy one of those rotating fans, i have pots and compost but im not sure of the proper soil mix 4 growin weed. will i need an extractor fan?? cos the area is fairly well vented ( maybe a bit 2 much? oh ye whats the deal with blue/red spectrum bulbs and all that malarkey? is it ok to just use blue spectrum?? the attic is not insulated but theres rarely outdoor temps below -2C so the attic temp shouldnt go below 0 especially wit the heat off the light. well do u think im on the right track?? all advice greatly appreciated:thumbsup::thumbsup::thumbsup::rasta:
First off all, really seriously do some reading otherwise this could be more difficult than you anticipate.
Blue spectrum is used for the plants "vegative" life stage (18 hours of light, 6 hours of dark (typically), and red bulb spectrum is used to "flower" the plants (12 hours of light, 12 hours of dark).
Ventilation is important, you need fresh air coming in to replenish the CO2 supply to your plants, this is important to help them lead a healthy life.
Regarding the soil needed, it should contain things (perlite) to allow the roots to breath, and to drain water though efficiently.
If it's not "airy", you could get root rot.

My most important piece of advice is, READ INTO the cultivation of cannabis.