need help with working out what fan to get for my space

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wullie23

Member

Apr 30, 2015

• #1

Hii just to see if anyone could help I have a grow room 85x85x200cm and I am using a 600 watt hps light what cfm or m3/h should be enough to keep the airflow okay would a fan with 565m3/h and 332cfm be enough please help asap

 

phil k

Well-Known Member

Apr 30, 2015

• #2

do you have a actual way to exhaust your fan like a hole going outside? as well as a second hole for fresh sir to come in?

 

phil k

Well-Known Member

Apr 30, 2015

• #3

wullie23 said:

Hii just to see if anyone could help I have a grow room 85x85x200cm and I am using a 600 watt hps light what cfm or m3/h should be enough to keep the airflow okay would a fan with 565m3/h and 332cfm be enough please help asap

Click to expand...

for something as small as a 2x6 a 4" exhaust is more than enough

 

phil k

Well-Known Member

Apr 30, 2015

• #4

sorry 2x2x6.....or whatever the CM was again .. 85x85x200.. 4" is enough

 

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wullie23

Member

Apr 30, 2015

• #5

Yes into my loft every one I was talking to said either a vortex or a rvk 150

 

phil k

Well-Known Member

Apr 30, 2015

• #6

either or.. i have a 4x4 tent for all my clones its vented with a 4" hydrofarm and i only run it at 50% (i cut it down with a air speed controller thing...)

 

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wullie23

Member

Apr 30, 2015

• #7

Would a 4 inch compensate for the heat from the hps light or should I get a 6" outtake and a 4"intake

 

phil k

Well-Known Member

Apr 30, 2015

• #8

you don't need a high end exhaust.. they all produce sound and move proper air vortex may be a few decibels lower.. but don't wast your money

 

phil k

Well-Known Member

Apr 30, 2015

• #9

well .. its all about your square foot and how fast it will turn over.. but a 600watter in a 2x2 tent is going to get hot... regardless..

 

phil k

Well-Known Member

Apr 30, 2015

• #10

but yes a 4 will turn the air fast enough.... is the tent going to be somewhere cool like a basement?

 

phil k

Well-Known Member

Apr 30, 2015

• #11

actually if your hooking up a carbon filter to it i would go 6" your really at the line on the CFM you need...so if your planning on adding a carbon or if your going to pull air through your light i would do 6"

 

phil k

Well-Known Member

Apr 30, 2015

• #12

this is my clone tent .. the fans ghetto rigged.. i know .. but it works not to worried about looks in my clone tent.. but its a 4" with 4" carbon like i was saying..

 

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wullie23

Member

Apr 30, 2015

• #13

No It's a cupboard grow intake is from a breather tile on the roof and out take is 6" so I will need a 6"fan I saw one on ebay for £50 with 565m3/h and 332 cfm

 

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wullie23

Member

Apr 30, 2015

• #14

Sorry it's taking ages to reply I am on my phone