setting up my vents. quick questions a a grower whos used vents will know!

The Happy Camper

The Happy Camper

Active Member
Okay i have 25 foot ducting system thats blowing air into the cool hood and taking it like 9 more feet outside, i have a 180cfm fan which isnt moving the air out from the hood fast enough, what im wondering is what would be a good CFM fan for this many feet of ducting?

second question is for fresh air being vented into the room, can i just have whole new tube venting fresh air from outside directly in? and if so do i need another vent to get that air out? cfm fan? most of this set up is getting done today.

Thanks guys
 
first we got to know what size duct 6" or 8" to help u and second ? u have to have a exhaust since from what i think i read u got a sealed hood so its not going to take exhaust of room out.

let me know if u need more info
 
u can probably just add some inline fans to ur ducting to get ur air movin better
2nd question:yes it can be comin from outside or from a cool place with some kind of screen or filter for insects
as for ur vent out,u will need another vent unless ur cool tube sucks ur growroom air out
hope that helps
 
fabfun said:
first we got to know what size duct 6" or 8" to help u and second ? u have to have a exhaust since from what i think i read u got a sealed hood so its not going to take exhaust of room out.

let me know if u need more info
Click to expand...
6", yes the cool hood is sealed, and since ill need to exhaust what kinda fan am i gonna need? HOW many fans am i going to need to vent this? grow space is 5x6 x7.5ft
 
moash said:
u can probably just add some inline fans to ur ducting to get ur air movin better
2nd question:yes it can be comin from outside or from a cool place with some kind of screen or filter for insects
as for ur vent out,u will need another vent unless ur cool tube sucks ur growroom air out
hope that helps
Click to expand...
haha at your quote sig.
yes i a put screens on the vents and i guess i will need an exhaust for the room, i guess i was somehow hoping the air would be vented into the rest of my house., since my grow space ceiling has raftors that makes it connect to every room.
 
For 600w in that space, 750 cfm or so should cool the light at 25' of duct
You'll need another fan/filter to exhaust the room
maybe 300cfm to exchange air
Fred
 
The Happy Camper said:
haha at your quote sig.
yes i a put screens on the vents and i guess i will need an exhaust for the room, i guess i was somehow hoping the air would be vented into the rest of my house., since my grow space ceiling has raftors that makes it connect to every room.
Click to expand...
that sounds like sufficient ventilation
have ur intake bring in air low and let it vent out through the ceiling
the heat will rise
but then how do u control odor
 
750cfm should work for 1000w too. The fan you have may be enough to filter/exchange air.
plantlightinghydroponics.com=best Votex prices on the net.
I send exhaust from my lights into the house in the winter. Helps with the heat bill.
Fred
 
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