8" inline 750 cfm to much?

motorcitymadman

motorcitymadman

Member
Ok heres the room specs:[6'x6'x4']tent,1000watt xxl cool hood.i just was told go bigger on the in line fan at 8" 750 cfm with matching cfm carbon filter.im going for a passive air in take with vents at the bottom opened and maybe a small in let fan.i know this seems like an over kill but looking twoards the futher expation some where down the road and i always go bigger.do guys think this fan will be to much for this set up my plan is to get a Titan fan speed controller day/night.seting the fan at 90%-100% lights on.then 50% lights off.still not sure one the fan on % have to do a few more dry runs.i have did my share of soaking in past threads trying to decifer whats usable info and whats "this is how i do it shit"...any thoughts welcomed
 
It really really sounds like overkill to me. I'm running a 336cfm 6-inch fan right now to cool a 600W light, and on its lowest setting of 3, it is more than I need or really want. I'll set up a 4" charcoal filter and fan when I get to the stinky plants stage ... Jmo. cn
 
Personally i prefer the "stepless" style of controller, for when the setting you want is outside or between the three available power level steps. This one is not cheap, but it is the best imo. cn
http://www.greners.com/can-fan-variable-voltage-speed-controller.html
get
 
I have great results just using a $10 dimmer extension cord... Variable to all speeds. http://www.amazon.com/Extension-Cord-Indoor-Piggy-back-White/dp/B0048F4H0C

I purchased my fan for $40 at a garage sale though - I'm sure the $250 model is a bit better for your fan, although at that price you could just replace the fan every now and then.

I would say 90% is a bit over kill with lights on. I ran a 1kW in a 4x4x6.5 tent and was using a 440cfm fan dimmed as low as I could make it while still maintaining suction for my carbon filter - never had heat issues.
 
thats gonna kill u in the summer u may get away with it in winter but u better push some cool air in and get rid of all that hot air
 
Yeah thats pretty serious right there the titan is a c note,that about all i gonna do for a fan speed controller.maybe down the line some where......
 
i am using a 6" in line duct inlet and 6" inline duct outlet fan (carbon filter) in a room 10" x 6" x 6" i have 2 X 600w hps lights in there at the moment and fans at lowest speed, temps at 26c, if you are using an 8" inline fan in a tent that size with a passive intake you better make a big hole for the intake thats all i can say.

it is coming to winter here just now so i am using the air from the house, if i suck the air in through the window the temps drop too low.
 
bulla said:
thats gonna kill u in the summer u may get away with it in winter but u better push some cool air in and get rid of all that hot air
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i agree the hot air is being vented out of the house completly leaving fresh co2 inriched air to be sucked in,from a cool basment.if worse comes to worse i will get an 6" fan for exhuasting and put he 8" away till i can expaned a little.but im thinking a carbon filter+cool hood and around 20' of venting to my exit source of hot gases,that fans proboly gonna be at 600cfm of so.....
 
WeeGogs said:
i am using a 6" in line duct inlet and 6" inline duct outlet fan (carbon filter) in a room 10" x 6" x 6" i have 2 X 600w hps lights in there at the moment and fans at lowest speed, temps at 26c, if you are using an 8" inline fan in a tent that size with a passive intake you better make a big hole for the intake thats all i can say.

it is coming to winter here just now so i am using the air from the house, if i suck the air in through the window the temps drop too low.
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also getting winter here and like u just the ambeint air in the room thatthe tents in.dont want to shock the ladys with sub zero air by no means but in the dog daze of summer i bet that big 8 comes in handy....
 
thats a n-rigged shapperell ice shanty just like a store bought tent just had to use panda film for the walls celing floor cut and seal my own vents...im a cheap ass when it comes to shit i can do my self.
 
i have a 600 watt in a room 6 long 3 wide and 8 tall in the summer i run lights on at night and use a 850 cfm fan with 10 inch filter i have 450 cfm air comming in my room with a shit load of small fans i rigged ,is HOT!!!!! now that winter is here i added a 1000 watter way to hot til it snows ....even my 1000 watter alone is too hot at night in that size room and i have CO2 injection ...u gotta use the biggest fans u can get its NEVER OVER KILL unless ur room gets too cold
 
bulla said:
i have a 600 watt in a room 6 long 3 wide and 8 tall in the summer i run lights on at night and use a 850 cfm fan with 10 inch filter i have 450 cfm air comming in my room with a shit load of small fans i rigged ,is HOT!!!!! now that winter is here i added a 1000 watter way to hot til it snows ....even my 1000 watter alone is too hot at night in that size room and i have CO2 injection ...u gotta use the biggest fans u can get its NEVER OVER KILL unless ur room gets too cold
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Thank u sir,thats what i have been told with this fan i can always add 1k to it and wont be scratching my balls wishing i would of got a bigger fan.i have seen a lot of post guys trying to get as close as they can to there absolute bottom # of cfm's they can get away with and wonder why there temps are to hot...common sense go bigger then u need
 
I got a 1000 watt in a 5x5x6 tent, my 250 CFM 6 inch fan works great to keep temps down. I don't think any fan could be overkill, the more air in and out the better, you should get a controller though so you can turn it down when friends are over, or when you're sleeping.
 
Nusky said:
I got a 1000 watt in a 5x5x6 tent, my 250 CFM 6 inch fan works great to keep temps down. I don't think any fan could be overkill, the more air in and out the better, you should get a controller though so you can turn it down when friends are over, or when you're sleeping.
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Thanks nusky and that what alot of experinced gardners are saying so i think i made the right choice...tight nugges to all
 
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