need an expert on cooling + rep

1

10mm fan boy

Well-Known Member
I am growing in a closet that is stealth and I am having BIG heat problems.

I have a big oversided portable AC and vented hoods but they pull from the closet so they end up pulling all the cold air out. Duh!:dunce:

I didn't really have a choice, being stealth and all. I tried it a few different ways and can't get it to work, so what I am looking at doing is setting up the vented hoods like "cool tubes" but being stealth I can't vent them properly. The only place I can draw air from is the attic. :wall:

Say the air up there is 150 degrees during summer, will it even be worth my time to set it up or will it actually make a difference?

Maybe it would make it hotter?

To avoid any confusion it would be setup to draw air from the attic, into my vented hoods and back into the attic.
I would be using air that is already very hot...

If it doesn't work I might be out of the game this summer.:-(
 
quantum

quantum

Well-Known Member
Dude
Pull 150 - 250 cfm per 1000 watts from inside your house through the grow box to your attic. you should not be pumping air hotter than 76 f inside of a small closet.
 
1

10mm fan boy

Well-Known Member
quantum said:
Dude
Pull 150 - 250 cfm per 1000 watts from inside your house to your attic. you should not be pumping air hotter than 76 f inside of a small closet.
Click to expand...
I live in a hot place.

Last summer my closed would get 90 in the morning w/o any lights even on.

My fan running my vented hoods is 640 cfm on a speed controller.
 
quantum

quantum

Well-Known Member
10mm fan boy said:
I live in a hot place.

Last summer my closed would get 90 in the morning w/o any lights even on.

My fan running my vented hoods is 640 cfm on a speed controller.
Click to expand...


Leave the air in the attic alone

if inside your house is 100 you are screwed

If your house is a little hot you can set up a control room of say a 10x10 and keep it at say 72 and pump the cool air in the room. run a different line from outside or basement through a sealed light to the attic.
 
1

10mm fan boy

Well-Known Member
DownOnWax said:
Have you tried just running the AC and venting it into the attic?

Got any pics?
Click to expand...
Sorry if i confused you.

My AC is actually setup in my bedroom and exhaust its hot air outside. I can get away with this not being stealth.

I have ran it both ducting cold air into my closet and w/o the duct just cooling my bedroom.

My vented hoods are going all the time, but my speed controller is turned down all the way and my lights are still cool to the touch.
Even so, this is still enough to suck all the air out of my bedroom and closed before it has a chance to get cool.
 
Ichi

Ichi

Well-Known Member
Try putting the hood blowers on a fan control and pull less air out. Let the AC do the work since it is already running.
 
quantum

quantum

Well-Known Member
look in the organics section and go to subcools forum
there is a great grow room set up he has posted.

with a little adjusting you can adapt it to a closet set up.
 
DownOnWax

DownOnWax

Well-Known Member
Ichi said:
Try putting the hood blowers on a fan control and pull less air out. Let the AC do the work since it is already running.
Click to expand...
Good idea.

You might be sucking the cold air out of the room way too fast.

You said you could go non stealth? If you can get your temps down to a reasonable level and not be as stealthy then I say do it.

The hottest you really want to get it is 85-88 with a humidity of about 40-50%.

A lot of people will tell you that it needs to be a constant 78 degrees but you can get by with +/- 10 or so degrees. It might give you looser buds and some heat stretching but any bud is good bud!
 
quantum

quantum

Well-Known Member
i have 2000 watts is a 3' x 8' x 7' at peak times my room is 78
i have a 800 cfm fan pulling three 7 inch lines. one for each light from outside through the light to back outside.
the third line has a carbon filter hook to it pulling air through my grow from my control room that is cooled by a 12000 btu window unit.
i have a thermostat set on 78 in the grow room that turns the fan on that pulls air through my lights and pulls cool air into my grow.
it typycally cycles on and off fairly regular once you get the ac and fan regulated to work together.

the entire room is 10 x 10 x 8
 
Ichi

Ichi

Well-Known Member
10mm fan boy said:
I do and they are already turned down all the way.
Click to expand...
Make a box with a female plug coming out of one end and a male out of the other. Put a second fan control in the box to get them down lower. Like a master dimmer.

Are the hoods on two different blowers? If they are you might want to think about cutting down to one fan and linking the hoods with ducting.

Just some ideas. Peace.
 
quantum

quantum

Well-Known Member
Dude i appreciate the rep, but i don't care about that shit.

I'm just trying to help.

those guy are dead on, slow down your air flow. 150 - 200 cfm of fresh air per 1k light is plenty but not to much to cool.
cool your lights separate if you can with outside air.
 
1

10mm fan boy

Well-Known Member
DownOnWax said:
Good idea.

You might be sucking the cold air out of the room way too fast.

You said you could go non stealth? If you can get your temps down to a reasonable level and not be as stealthy then I say do it.

The hottest you really want to get it is 85-88 with a humidity of about 40-50%.

A lot of people will tell you that it needs to be a constant 78 degrees but you can get by with +/- 10 or so degrees. It might give you looser buds and some heat stretching but any bud is good bud!
Click to expand...

My bedroom must look "normal"
I can get away with the AC but nothing else visible (like cool tube ducts)
 
1

10mm fan boy

Well-Known Member
Ichi said:
Make a box with a female plug coming out of one end and a male out of the other. Put a second fan control in the box to get them down lower. Like a master dimmer.

Are the hoods on two different blowers? If they are you might want to think about cutting down to one fan and linking the hoods with ducting.

Just some ideas. Peace.
Click to expand...
I have one fan that hooks up to two hoods.

 
1

10mm fan boy

Well-Known Member
quantum said:
Dude i appreciate the rep, but i don't care about that shit.

I'm just trying to help.

those guy are dead on, slow down your air flow. 150 - 200 cfm of fresh air per 1k light is plenty but not to much to cool.
cool your lights separate if you can with outside air.
Click to expand...
I can try to get the air from outside but it will still be over 100 degrees.
Do you think it will radiate into the grow room?
 
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