AAAARRGGHH!!! I DONT UNDERSTAND!

[faithlessxxx]

No, I have all that. I just turned the fan to the intake at the bottom off, because someone said a passive intake is enough.
Its on now, and it seems to keep the temps at about 28C, which is nowhere near good enough for when I add another 400W in 3-4 weeks..


Naturally, I have an intake low down and an exhaust high up. Check my first post for specs please.
And I've tried dismantling the cool tube and just sucking the ambient air, and it doesn't seem to make much difference.

[latewood]

don't have time...just trying to help. if you got it good, I'm gone...peace

[faithlessxxx]

Well, thanks for the help...But I don't got it good...

[latewood]

I will try to get back to you very soon...hang in there

[latewood]

OH yeah...please convert your values to standard from metric...to save us time. I mod 3 sites and own 2 others...So I stay bbbbbuuusssssyyy!

[faithlessxxx]

The room is: 3.9'*5.9'
Its about 10' high.
Intake hole low down is 4"
Exhaust hole about 6' up is 10"
10" flex duct leading about 4.5' from the fan to the exhaust.
The fan is 10":

TD 350/125 (125mm/360m3/hour) - Hydroponics UK, Hydroponics Systems & Grow Lights

Converting m3h and cfm seems hard, but I think the fan is 212cfm - (360m3h).
It's two speed, which seems to have to do with how you wire it. I thought perhaps I had it wired to low speed, but after checking the diagram (not that I really understand it) I dont think so...
I have a small fan as well that I'm using to blow in cold air through the intake.

However, the exaust and the intake are drilled in the same wall, not opposite each other, as is the norm, but I don't think that should matter since the flex duct from the fan/ the cool tube is fed to that hole.

Should there be another exhaust for ambient air?

.

[dusto2k3]

faithless. Its OK to have your exhaust and intake on the same wall. You will want a fan in the room to spread that fresh air that does come in around inside the growroom. You might want to figure out the schematic to your fan. Or take a close up pic and let us figure it out for you.

[dusto2k3]

yes is you have your light isolated from the grow room, which sounds like you do, then yes. you wiull need two exhausts

[dusto2k3]

where is the intake for the fan that is connected to the cooltube? is it set up like top or bottom?

[dusto2k3]

or like this?