Can fan + carbon scrubber query?

Niko Bellick

Niko Bellick

Well-Known Member
I'm planning out the ventilation for my grow and I'm wondering if there would be any adverse affects to hooking the carbon scrubber directly behind a 745 cfm duct fan. Would it put to much strain on the carbon scrubber being that close? should i have some space between the two?

The dimensions are as follows: 4.5'W x 4.8L x 6.8T *give or take a few inches. 600Hps Cooltube.
 
jondamon

jondamon

Well-Known Member
zerowzz said:
if the carbon filter is made for such high cfm fans, it is no problem at all. :)
Click to expand...

This is correct. Check the scrubbers rating of CFM's to see whether or not it will be ok.


In order to have no smell you would need a scrubber rated around the 820cfm range.





J
 
Dank Hands

Dank Hands

Active Member
jondamon said:
This is correct. Check the scrubbers rating of CFM's to see whether or not it will be ok.


In order to have no smell you would need a scrubber rated around the 820cfm range.





J
Click to expand...

this confuses me, I always thought as long as his carbon filter was atleast the cfm rating of his fan it was enough. Did you mean 745 or am I misunderstanding this?
 
jondamon

jondamon

Well-Known Member
I always over spec my filter by around 20% IMO this helps to have ZERO smell from your exhaust.


Dont get me wrong the basic calculations for design are correct

Room size in CFM or CMH
+5% for air cooled hood
+15% for non air cooled
+20% for filter

This is the basic calculation to design a room.

In practice though it's always better to over spec your filter. I use a 280cmh fan with a 350cmh filter.



J
 
BeaverHuntr

BeaverHuntr

Well-Known Member
jondamon said:
This is correct. Check the scrubbers rating of CFM's to see whether or not it will be ok.


In order to have no smell you would need a scrubber rated around the 820cfm range.







J
Click to expand...
What he said you need to try and match the CFM of your Fan to the Carbons Scrubber rating of CFM's..
 
Niko Bellick

Niko Bellick

Well-Known Member
jondamon said:
I always over spec my filter by around 20% IMO this helps to have ZERO smell from your exhaust.


Dont get me wrong the basic calculations for design are correct

Room size in CFM or CMH
+5% for air cooled hood
+15% for non air cooled
+20% for filter

This is the basic calculation to design a room.

In practice though it's always better to over spec your filter. I use a 280cmh fan with a 350cmh filter.



J
Click to expand...
Ok, makes sense to me. Thanks for breaking it down as well. Didn't think about getting a scrubber rated for more than the fan. Already have the fan just gotta get a speed controller and the scrubber.
 
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