Airflow problems....

[The Badrabbit.]

Ive got 4 durban poison babies growing in a grow room, 5ft tall and about 3 ft square, a 250watt light and they seem to be growing well, it gets pretty walm but not boiling do I need an extractor fan to move air around and if I dont get one will it affect the bud results, newbie grower, all help appreciated. cheers

[pokingsmot]

always exchange your air, very important... mid 70's is your target temp, also i would upgrade to at least a 400 mh ,but a 600 hps would be the best choice a 250 wont get you anything more than "fluff" durban will kick your teeth in if you bud it 12 plus weeks ive grown 100+ strains and durban has been my fave ,good luck

[The Badrabbit.]

cheers for that, do I have to buy a new lighting system to upgrade or can I just shove a 400 watt bulb into this one???, sorry if thats a dumb ass question, im a bit clueless :eek: