Skeeter4200
Active Member
Any ideas are welcome on a better way to run my flower tent?
Need a thoughts on my room setup pic is in comment..
- Thread starter Skeeter4200
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Skeeter4200
Active Member
Thanks,, just need to connect it,, would you yourself have the fan pushing or pulling to cool both hoods?
Skeeter4200
Active Member
Also since I'm running 2 hoods,, 1 a 600watt & 1,, 1000watt hoods,, I should put the 1000watt hps last closest to the exit out?
Renfro
Well-Known Member
Agreed. Not a big fan of those. (pun intended lol) Especially if sucking through a carbon filter. Some people like them because they are quiet, they don't fight static pressure loss well at all though.
Kipn
Well-Known Member
i like them for a 3x4x6 tent but even running a 6 inch plus carbon filter is borderline not enough air exchange and i dont use air cooled hoods. a decent 8inch or bigger centrifuge extractor fan is what he will need for that size tent
doogledore
Well-Known Member
Hi Skeeter, I used this site (http://www.phreshfilter.com/tools/cfm-calculator) to approximate CFM needs for my space.
Our grows are completely different but I too am using your brand of fan ( its a 4 inch in a 2.5x5x6) and was disappointed with performance out of the box (chose the 4 inch for quietness + temp/humid monitor).
The 4inch is listed at 205CFM, my carbon filter at 230CFM, and my CFM approximation per phresh was 175...I had to throw in a 90 degree bend, 4->3 reducers between filter and fan, and no exhaust ducting to achieve the negative pressure I was looking for at half speed.
Renfro, care to enlighten me in the most non-technical way why ac infinity doesn't deal well with static pressure? If my fan is running half speed does that mean its doing approximately 100CFM or are there other variables at play now with a bend and reducer?
Our grows are completely different but I too am using your brand of fan ( its a 4 inch in a 2.5x5x6) and was disappointed with performance out of the box (chose the 4 inch for quietness + temp/humid monitor).
The 4inch is listed at 205CFM, my carbon filter at 230CFM, and my CFM approximation per phresh was 175...I had to throw in a 90 degree bend, 4->3 reducers between filter and fan, and no exhaust ducting to achieve the negative pressure I was looking for at half speed.
Renfro, care to enlighten me in the most non-technical way why ac infinity doesn't deal well with static pressure? If my fan is running half speed does that mean its doing approximately 100CFM or are there other variables at play now with a bend and reducer?
Renfro
Well-Known Member
Centrifugal fans or blowers use one of seven types of wheels that are enclosed in a scroll shaped housing. The air enters the fan wheel through the housing inlet, turns 90 degrees and is accelerated radially and exits the fan housing. Centrifugal fans are typically used for lower flows and higher pressures.
Axial fans use a propeller, having two or more blades, to move air in an axial direction through a cylindrical housing or formed orifice panel. Axial fans are typically used for higher flows and lower pressures.
If your blower is getting the job done thats great. The centrifugal blowers can fight restrictions such as bends and reducers much better while maintaining more of their rated CFM.
doogledore
Well-Known Member
Easy to understand, thanks Renfro! And good info for anyone considering an AC Infinity...with my takeaway being increase pressure through smaller ducting,reducers, and as close to a sealed vent system as possible.
Skeeter4200
Active Member
It has a 394 cfm rating 6in
Skeeter4200
Active Member
I also have a regular inline fan 6in with 434 cfm rating.
Skeeter4200
Active Member
All's I'm using the 1 on the floor was too push air thru the 2 hoods outside all together it's about 12foot of ducting,, till my exhaust exit,, 1 big straight line..
Skeeter4200
Active Member
Question is which is which my good brotha on axial & centrifugal fan?
Skeeter4200
Active Member
Damn I'm confused a little bit,, so the inline fan on the floor won't work? Just purchased it...
Renfro
Well-Known Member
1600 watts of heat seems like a bit more than I would expect it to handle. Especially with the static pressure it would encounter with a carbon filter and duct run.
I would have went with this: https://heavygardens.com/vortex-6-powerfan-497-cfm.html?fee=15&fep=13271&utm_source=google-feed&utm_medium=shopping feed&utm_campaign=SCFeed&utm_source=google&utm_medium=cpc&adpos=1o1&scid=scplpVTX600&sc_intid=VTX600&gclid=EAIaIQobChMIzZCQkavu4AIVsCCtBh3GTgMiEAQYASABEgIxEvD_BwE
This would be a budget version, I can not attest to the quality of it: https://www.zenhydro.com/ipower-6-inch-inline-fan-440-cfm.html?utm_source=google_shopping&gclid=EAIaIQobChMIzZCQkavu4AIVsCCtBh3GTgMiEAQYCCABEgKhL_D_BwE
Renfro
Well-Known Member
Thing is these blowers will make more noise than the other one. That said a duct muffler would help with that some. Also using smooth galvanized snap seam duct work makes for less static pressure and therefore better and quieter performance. Always use the aluminum foil tape on the joints, you would be surprised how much air leaks out if you don't. Minimize bends, and when you must have them a larger radius bend will flow better (no sharp turns and avoid making u turns).
If it was my tent I would actually use 8" hoods and 8" blower, then a speed control to slow it down (or turn it up in case of heat issues). That said I understand that budget is often a concern. I just know what I learned by buying cheap/wrong stuff and having to replace it later. lol
I hope your grow is fruitful and that you share your venture here with us.
If it was my tent I would actually use 8" hoods and 8" blower, then a speed control to slow it down (or turn it up in case of heat issues). That said I understand that budget is often a concern. I just know what I learned by buying cheap/wrong stuff and having to replace it later. lol
I hope your grow is fruitful and that you share your venture here with us.
Skeeter4200
Active Member
Would this fan work better 434
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Skeeter4200
Active Member
I already have that 1 hooked into my veg tent,, easily able to swap it out