Thinking of growing in a metal cupboard thats about 1.5m tall and was wondering what shall I do for lights? Would a lamp work with a uv bulb in?????
Cfl lights are very cheap to run and can be cheap to buy multiple low watt lights but your best buying a dual 125w cfl light for around 30 pound and will be about 3 pound a month to run if that
you could just buy a b22 lamp fixture no wiring needed maybe you'll need to do some wiring for the fans thats it though, and no like this one 125w Dual Spectrum CFL & hanger hydroponics grow light! | eBay that one comes already wired and ready to plug in it needs to be dual spectrum blue and red
Are fans essential? What purpose do they serve? I saw in a documentary about them strengthening the stems, is that why?
Yes fan's are essential tgey keep good are flow and ventilation it does also strengthen the stem and yes you can use just one if it's dual spectrum and the rule of thumb is 100w for the first plant and an extra 50w per plant
My first grow had nothing but a 120cfm fan and passive intake, I lst'd the plant open with 9 strong branches. So there may be some truth to that but that was just my experience. I since have added a fan but have yet to start a new grow.