EvolAlex
Well-Known Member
What kind of light were you using? How many watts? And what was your temp B4 the fan?
Same questions to you. Thanks guys.
Is 185 CFM enough to vent/cool my 96cubic ft room?
- Thread starter EvolAlex
- Start date
FullDuplex
Well-Known Member
Running one of these on my 250 and temps are at 75 constant, been running it for a month and nothing over 78. Great price and quiet
http://www.plantlightinghydroponics.com/valueline-inch-435-cfm-centrifugal-inline-fan-p-2260.html
http://www.plantlightinghydroponics.com/valueline-inch-435-cfm-centrifugal-inline-fan-p-2260.html
KitchenKhemist
Active Member
400w MH, remote ballast, 4" Active Air Inline Fan (ECO5600)
Also might add that he used a 12" Oscillating fan (powered on when exhaust was on) aimed between the light and plant tops.
Don't have a pre-fan temp really....installed the fan as I built his room. I CAN tell you that the hidden latch mechanism was busted once, requiring me to get in there and shut the room to fix it. Can't remember why I unplugged the fans, but it got freakin sweltering in there in a big hurry. Wasn't inside 15 minutes, and I was pouring sweat!
g00sEgg
Well-Known Member
400w cool tube. The temps before my fan were getting up into the high 90's with my door closed. Today the temps are staying between 70-78
g00sEgg
Well-Known Member
I'm not sure if it's worth it...lol...it definitely keeps the temps down...which is helping a lot. I just pull air through my cool tube and exhaust it out of my room.
sixstring2112
Well-Known Member
Just so you know, a 400 gets alot hotter than a 250. these guys telling you you will be fine with a 178 (booster fan) are wrong. 178 will be bare bones, it will work but dont plan on adding anything else.and you will not need a fan control to slow it because it will be on full out all the time.I have 2 150 hps that i dont cool at all, big jump in heat when you go to a 400 or 600. if you have your room someplace that is ALWAYS 70f or less you will get by just fine with the small fan. if it gets up to 75+ you will be fighting the heat .
Trailer Park Boy
Member
Fan speed control unit. Should be around $15 @ Home depot, etc..Used for kitchen exhaust/ hood fans. A rheostat cant handle the power.
KitchenKhemist
Active Member
"(booster fan)" ???? "wrong" ????
OK...guess I just come around to bullshit people and f*ck up their grows. Duct booster fans are a joke. As a matter of fact, I have a nasty feeling they impede airflow more than they help. I'm talking about a 4" inline centrifugal fan...but I understand how easy it can be to post something retarded before doing something as difficult as a Google search for a brand and model number than have already been given to you.
You are right about not needing a fan speed control though, a timer or line voltage stat works wonders. Those fans are made to run full blast, and NO...they aren't on all the time. More like 2/3 of the time during daylight hours, and 1/3 of the time at night. But a guy running (2) 150w HPS lamps knows everything about 400w MH setups and the temps they produce...why am I here again?