i need some advice. i was reading up on lighting and came across a few sites that said in order to harvest "good" marijuana you need to provide around 45,000 lumens. right now i am using only about 12,000 lumens. i'm aiming to get very dense buds. i was also debating about downgrading from a 400 hps system to 250 hps system to flower so there would not be such a drastic increase in temperature and electricity usage. right now my electricity bill is around $50 a month including the lighting of the plants (currently using about 200 watts for lighting right now). if i use the 400 watt hps system will i have to buy an air conditioning unit or is there any other way to reduce the temperature without purchasing an a/c. please give advice!!!