Temps at 98 degrees

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Miker30

Member
Hey guys I'm a new grower 3rd week of flowering my 10x 10 x7 foot grow room is 98 degrees I have 2 x 1000 watt hps lights in there with a 435 cfm inline fan hook up to my hood pulling air up and threw the roof on the the other side of the hood is open pulling heat out but thats not working I also have a window a/c unit this thing is not cooling off the room do you think if I ran ducting from the a/c unit threw the air cooled lights to keep the heat down that will be ok or will it blow up my hps bulbs much help is appreciated thank you
 
jondamon

jondamon

Well-Known Member
Where are you exhausting your hot air to?

You need to get the hot air out as far away as possible so you dont end up recirculating air.


Its easier to remove excess heat than to cool it.




J
 
iNFID3L

iNFID3L

Well-Known Member
You need to be shifting more air OUT than that.

i think you have 19 square mtrs. , and i think thats 204 sq foot.


you need more extraction, i THINK.

you need to be moving 4080 sqft of air an hour.

someone might be along to correct me.
 
iNFID3L

iNFID3L

Well-Known Member
im using a 470 in a 1mtr square by 2.5 high box room , temps are currently resting at 76f
 
jondamon

jondamon

Well-Known Member
Everyone here is correct you need a larger fan.

10X10X7=700CFM +5% for each lighting hood

770CFM + 20% if you use a carbon filter

so this becomes 923CFM




J
 
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mrmadcow

Well-Known Member
sounds like you are sucking all the cold air the ac throws out of the room. how about running a duct from outside to the hood and back outside? the ac should be able to cool the room if the heat from the lights are handled by the fan.
how big is the AC? how hot is the air outside the room? you are not in a metal shed in the desert,are u?
 
smokebros

smokebros

Well-Known Member
Damn! that is hot. As previous members have mentioned, I would increase the exhaust. 435 cfm is not enough to cool 2,000 watts worth of lights. Exhaust the air and make sure you have adequate air intake such as another fan or simply negative air pressure.

purchase another fan
and your going to need to find a way to keep the room cold, I would suggest a larger AC or a stand alone room AC. Your plants will be prone to more deficiencies/diseases at 98 degrees.
 
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Miker30

Member
The heat outside is 101 degrees so if pull the air from outside and exhaust it threw the attic will that cool the room down
 
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Miker30

Member
If I purchase another inline fan what size would I need right now the one I have now is 435 cfm what is the next size up and if I get it would it keep things cooler
 
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