sweet, cheers pro grow for the techie low down:thumbsup:
so can ya recomend any other filtration medium which is also easily available as i dont have the luxury of a nearby hydro store.

also i've decided to build a veg cab in my room but will be a little restricted by size (2'x3'x4'). i've just finished making my light system, i made a reflector from sheet aluminium and i've taken apart 5 x 24" 18w flouros, mounted the bulb holders in the hood and the ballasts will be outside the cab to reduce heat build up.

my flower cab will running dwc under 400w hps, so my question is will it be ok to build a shallow dwc set up or do the roots need a certain depth of water, as i dont wanna sacrifice height in there but, if i did it dwc, it would be easier to transplant into my flowering chamer, or could any1 recomend another set up which will facillitate ease of transplant and a shallow base.
hope this makes sense an not just more stoned babbling

peace out