woo man, 2000watts is a bit much for 14 by 14ft. you may only need one of those lamps, but the more the marrier. it's pretty hard to give a cannabis plant too much light. the most common problem with too much light is too much heat. utility bill will be a lot higher, especily during the veg. phase. i would guess a buck or two a day. you can buy timers for your fans. if you want to go all out their are some really nice climate control timers that you can set your fans, co2, temp, and humity all at once or you can go the cheap way and buy some more light timers(be shure they can be cut on and off several times a day)and use them for your fans. alough with that much light you may need them on the entire day. remember to cover the smell of your exuast fan so not to alarm your neighbors.
dylan Reviewed by dylan on . Quick question about lighting and ventilation Hey guys im looking for some advice as i'm new to the indoor growing scene, i have just purchased two 1000w Prolight HPS lights with reflectors and have a loft 14ft by 14ft. I've lined the walls with tin foil (dull side out) and intend to grow around 40 plants, will this be enough lighting? I'm also worried about the amount of heat generated and my electric bills! Will i require two fans (one to extract and one to put fresh air in) and should they be running all the time or can i set them on Rating: 5