My Homemade Cooltube

shiva71

shiva71

Well-Known Member
Looks great bro, nice work...your pulling the hot air out yeah? What cfm fan do you have at the end of the ducting_?
 
sqhschief

sqhschief

Active Member
shiva71 said:
Looks great bro, nice work...your pulling the hot air out yeah? What cfm fan do you have at the end of the ducting_?
Click to expand...
Yeah it's pulling it through. I currently have a 90cfm inline fan, but will upgrade that if I feel I should drop the temps more.
 
shiva71

shiva71

Well-Known Member
Cheers, i guess it aint too stinky at the mo but what will you do about a carb filt later on, will you keep the tube vent and carb filt/extraction separate?

Sorry, im a newbie and just wanna get my facts right (!) but where you have the open end of the cool tube, you could have more ducting to a passive vent and draw air from outside the growspace, that another possibility...?

cheers bro happy growing!
 
sqhschief

sqhschief

Active Member
shiva71 said:
Cheers, i guess it aint too stinky at the mo but what will you do about a carb filt later on, will you keep the tube vent and carb filt/extraction separate?

Sorry, im a newbie and just wanna get my facts right (!) but where you have the open end of the cool tube, you could have more ducting to a passive vent and draw air from outside the growspace, that another possibility...?

cheers bro happy growing!
Click to expand...
See that's what I was thinking. When I begin to flower and the room starts to get some fragrance, I will get a higher cfm fan, connects more tubing on the intake of the cool tube, and connect a carbon filter to that. See where I'm going with this?
 
shiva71

shiva71

Well-Known Member
Well good luck with that...

i was thinking tho, why not eliminate the ducting and just fix the carb filter directly on the end of the cool tube without the ducting...i cant see the advantage of using the ducting btween tube and filter, wouldnt having the filter closer to the fan increase the air suction through the filter? i guess maybe it wouldnt make that much difference...what cfm would you need to cool your 400w?
 
sqhschief

sqhschief

Active Member
growlegal said:
and you should change your 4" vent ducting to foil type.
That plastic gets brittle and could cause a fire. It is even outlawed for dryer vents in most states.
Otherwise nice job.
Click to expand...
Plan on changing it. However this tube isn't getting hot at all...

shiva71 said:
Well good luck with that...

i was thinking tho, why not eliminate the ducting and just fix the carb filter directly on the end of the cool tube without the ducting...i cant see the advantage of using the ducting btween tube and filter, wouldnt having the filter closer to the fan increase the air suction through the filter? i guess maybe it wouldnt make that much difference...what cfm would you need to cool your 400w?
Click to expand...
Well that's a good idea. I suppose most people do it for space constraints though.
 
tom__420

tom__420

Well-Known Member
I have my diy cool tube attached to ducting and the top part of the box so that it will suck all the hot air that rises. Heat rises so if you have the c/f up high it will suck it out. I have found that it keeps temps a little more in check this way
 
sqhschief

sqhschief

Active Member
tom__420 said:
I have my diy cool tube attached to ducting and the top part of the box so that it will suck all the hot air that rises. Heat rises so if you have the c/f up high it will suck it out. I have found that it keeps temps a little more in check this way
Click to expand...
Ah nice one. Didn't even think of that.
 
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