I tried to post a thread the other day but posted in wrong section [as i'm sure many others also]no problem though as somebody tried to help me out and sent it to this section but nobody has actually tried to answer my original queries only pointed out the f-ing obvious that i ain't no good on these here computers!!!.So now i shall try again and hope that people who know alot more about growing weed will kindly offer me advice,[also ignore the fact i'm a crazy brit?]as that's what the inter-net is for...sharing knowledge etc,not to show off and be ignorant???[or is it?].I've been growing now for two years and learnt most of it from different sites sat night after night stoned and reading etc but now have come to the stage where i could do with some advice!.My play room is about three metres square[actual grow space is two and a half metres long by a metre long upto roof hight]out-side brick shed fully insulated with adjoining shed where i keep ballasts ,carbon filters taken threw adjoining wall.I have two six hundred sodium bulbs inside a hood i made ,which virtually covers grow area that's also surrounded with silver myla.I have a six inch in-let fan directly drawn in from out side which is then blown over tops of plants by sixteen inch oscilating fan positioned next to it,then exhausted out by two four inch fans[one positioned in top of hood]piped into room next door threw two carbon filters[ obviously fans at different ends and hight].My dark period is 7 a.m to 7 p.m and on this grow i have about seventy plants in four to six inch pots in there fifth week of flowering and all doing great but my problem is-currently i leave on all fans 24/7, two four inch exhausting out ,one six inch drawing in ,plus oscilating fan moving air around,temps about 70 to 80 and about 60 during dark period,humidity is about 60% [abit more in dark!]and every thing seems to be great,never grown in little pots before ,or so many ,but apart from a little over crowding the only worry i have is the bloody elecky bill -about five pound a day?,i do have a double digital timer but it's a nightmare trying to set it! and currently on 12/12.Do i need them going 24/7 or can i get away with less,thank you for reading this hope it makes sence, it's early in morning and only had two spliffs???gonna go and stroke my out door babies in my garden which have been growing since january there now seven foot monsters [even under the English sun which only shines in the post cards]but i doubt they will yield much bud...oh well ,must keep trying, you can't beat smoking your own can you???