400w with no exhaust fan

i have just got a 400w hps and put it in my closet with no exhaust an the temp is 86-89f i have a oscilating fan in there. i hav 1 plant flowering underneah it this plant is 2 weeks into flowering i was using cfls throughout the whole grow but today put it under the hps will it be ok ?

Temperature this will help i think you want to keep it under 85 ,this link will explain better then i can

thnx for the quick reply i will take a look now

no.


if you're in the northern hemisphere, you'll be moving into spring and summer before long. 86-89 will become 95-105 with every low pressure front that moves through your area.

solution: buy two fans and place one on the floor at the closet opening on one end facing in and the other on the upper shelf in the closet facing out the other end. the higher the better since you want to exhaust all of the hot air that's risen.

bu what if i dont put an exhaust in the closet because i cant will my girl be ok?

the plant starts stressing if its over 85 ,can you leave the door open

yes i can leave it open and i will get an exhaust fan after my girl is finished will a few pc fans be ok seen as the temp is not too too high

any air movement will help

zilluz said:

bu what if i dont put an exhaust in the closet because i cant will my girl be ok?

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The more hot air you get out and the more cool air you get in, the bigger your buds will be. A 400 will not give good results in a un ventilated closet.

ok then thanks again for the help +rep

the hotter the room the faster ur thc breaks down, 85 degrees is to hot for flower n the bigger problem with temps that high is ur humidity levels. must be up there which is the bigger deal when flowering, keep the humidity low otherwise it'll effect your yeild. type how to grow marijuana in ur search engine and it'll also tell ur what kind of ratio of nuts to use at those temps.

the primo temp during flowering is 68 degrees with as low humidity as u can get.

ive got it steady at 86 - 87 wiv the door open

zilluz said:

ive got it steady at 86 - 87 wiv the door open

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They will be fine. I have grown girls that stayed in a flower room with a temp that stayed consistently @ 90+ degrees. It's not IDEAL, but sometimes you don't have a choice.

I currently have 2 400w lights flowering mine and the temp is about 85 degrees in the room. I have two huge box fans blowing straight across the tops and I keep the door open to allow as much air flow as possible. They won't like hot stagnant air, but with enough airflow I'd say the temp at the top of my plants is 90 degrees and I haven't seen any signs of heat stress as of yet. If heat becomes a problem I have backup plans though...portable A/C works pretty well and lowers humidity.

ive got a few fans i think i could use to direct fresh ar into the box ive got it down o 84ish now thnks for all the frienly and helpful advice