Heat prob

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dambusters

Active Member
Haveing probs with temps.room size is 2 by 1.5 feet,250w hps 5 inch fan extracting air from room throught top of hood,4 inch fan sucking cool air from outside into bottom of room,light about 5inch from plant,temps 90 to 100.Any ideas? Thanks
 
Clonex

Clonex

Well-Known Member
What is the Temp of the Air coming in from your intake fan ?
Try aiming a fan directly at your bulb ,
Try adding a passive outake hole in the top of your tent...
just some things that worked for me in the past ....
 
knourgro

knourgro

Active Member
if your intake fan has a lower cfm than your exhaust fan then not only are you harming your heat reduction abilities, but your also creating a small "vacuum" in the chamber which is not good. you can try ductiong in cool air (from outside or a cooler room) getting an A/C unit (expensive as fuck) or my personal favorite, just get a more powerful inline fan.

do you have pics of your setup? i had a huge prob with this, if you give me a pic and the current temps both in and out of the box, i can fix this for you.
 
cocakola

cocakola

Active Member
Imo you should raise the cool air thats being sucked from your fan , maybe run a duct from your fan above your light cuz cold air sinks and heat rises. So the cool air you have comming in from the bottom never makes its way up. I have a duct running from my a c and i run it over my hood to hang on the other side of the hood and it works great for me. Good luck hope my 2 cents helped.

Happy Growing!
 
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dambusters

Active Member
Thanks forgot to mention got 3inch computor fan between light and plant,do you think light to close? ill try ducting air closer to hood,maybe get bigger exhaust fan,but it sucks tent in so plenty suction.
 
massah

massah

Well-Known Member
don't make multiple threads about the same problem..let people answer in just one please...I left you an answer on the other thread you started ;)
 
knourgro

knourgro

Active Member
dambusters said:
Thanks forgot to mention got 3inch computor fan between light and plant,do you think light to close? ill try ducting air closer to hood,maybe get bigger exhaust fan,but it sucks tent in so plenty suction.
Click to expand...
it shouldnt suck in the tent!! if its pulling in the sides, its because you have a VACUUM inside, which is bad. its being caused by your exhaust fan overpowering your intake fan. thats gona put your temp through the roof alone man. fix that first!!
 
jafooli

jafooli

Active Member
imo you font want direct air from a fan blowing on the lights. All that achieves is blowing hot air about the room. Making your average room temp higher. Trie raise your lights bit higher. Also i use a smaller intake fan than my exhaust fan. It does create a small vacume which helps out with the smell
 
knourgro

knourgro

Active Member
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