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Tutorial Ventilation 101

justanotherbozo

Active member
Would a can fan Max pro 6' adequately cool a 1000w gavita?

...possibly but an 8inch would be better.

...I assume this is for a tent and if so then it would depend on how cool the room where the tent lives is.

...in my own case I ran a 6inch CanFan Max in a 5x5 closet with a bare bulb 600HPS and the fan handled it fine and in the room with the closet i also ran a 4x4 with another 600HPS in it with a 6inch vortex style fan as well as a 5x5 veg tent with 200 plus watts of fluoro's and a 6inch squirrel cage, and a small cloning/seedstart cab with another approximately 100watts of fluoro's.

...in the winter i cooked the room by opening windows and in the summer i ran a 5000btu window ac unit.

...so I'm thinking the CanFan would work but maybe not so if you haven't spent your cash yet then I'd recommend you go with an 8inch with a speed controller.

...for the money something like this would work well and be cheap enough to replace or even to have a spare in case of an inconvenient failure.

https://vivosun.com/products/vivosu...term=4588880500710278&utm_content=Ad group #1

peace, bozo
 
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f-e

Well-known member
Mentor
what's the best way to vent an airconditioned room without losing all the cool dry air? i live in the tropics so keeping the room cool and dry is a must to stop mould. do i vent slow and steady to allow the aircon to keep up or is there another way to achieve air exchange?

Separate the air around your lights, from the air around your plants. Or water cool the lights.
 

trouthugger

Active member
I am trying to re-vamp my closet grow (only one previous harvest in this space) before my next grow.

tent.jpg

My top priorities are stealth and efficiency. I am renting my home long term, my landlord comes about once a year for 10 minutes and doesn't leave my living room. That being said, I like to be prepared for the worst. I am handy but want the repairs that I'll have to do when I move out to be as minimal as possible.

My first step is figuring out my exhaust situation. I have three options:

1. Exhaust through the ceiling of closet through the attic and out of the house
2. Exhaust through the right side of the closet into the home stairway
stairs.jpg


3. Vent through the left side of the closet into an adjacent storage closet.
closets.jpg


What option do you think would be the best given my unique situation? I run a 225W LED and grow 1-2 plants at a time.
 

trouthugger

Active member
I am trying to re-vamp my closet grow (only one previous harvest in this space) before my next grow.

tent.jpg

My top priorities are stealth and efficiency. I am renting my home long term, my landlord comes about once a year for 10 minutes and doesn't leave my living room. That being said, I like to be prepared for the worst. I am handy but want the repairs that I'll have to do when I move out to be as minimal as possible.

My first step is figuring out my exhaust situation. I have three options:

1. Exhaust through the ceiling of closet through the attic and out of the house
2. Exhaust through the right side of the closet into the home stairway
stairs.jpg


3. Vent through the left side of the closet into an adjacent storage closet.
closets.jpg


What option do you think would be the best given my unique situation? I run a 225W LED and grow 1-2 plants at a time.
I think I'm going to cut a hole in the door and exhaust at the top of the right side door. Is there a way I can set up the ducting so that I can still open and close the door without disturbing the ducting?
 

xet

Well-known member
Incoming stoner idea.

55 gal food grade drum ($20) filled with water.
A $20 aquarium pump moves 7 gallons of air/minute. A $40 pump moves 17 gallons of air/minute.
Aquarium pumps have small tubes.
Put the intake portion of the pump in the tent. (high because heat rises)
Run the tube and air stone on the end to the bottom of the barrel.
Filtered and chilled air?
I would also experiment with 5 or 10 gallons of powdered char in the water as a smell absorbent. Replace water as needed, water onto lawn, landlord gets green yard.
 
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exploziv

pure dynamite
Moderator
Chat Moderator
ICMag Supporter
Too little air input for any good size tent. Also, you would soon have the water sitting at the average temperature of the environment, so not much cooling happening. Yet, a lot of humidity going into the tent. Sounds like a bad ideea to me.
 

xet

Well-known member
Setup a dehumidifier next to the barrel.
The water is not in the tent.
We were talking about a tent with a 225w LED so any good size tent is a different topic.
How many gallons of air/minute would need to be extracted to temper the heat from a 225W LED?

Aren't you the guy who gave me the wrong electrical numbers?
 

exploziv

pure dynamite
Moderator
Chat Moderator
ICMag Supporter
I would say at least 1-2 airchanges a minute should be supplied or at least available when needed. I wouldn't think those aquarium pumps will deliver same rated output when pumping a full 55gal drum height (well, depth!). So you do the math when you figure the volume of your tent, leave some leeway for pumping efficiency loss and it might work as airchange would be concerned. But, you'll find the air coming from the drum is full of humidity, basically you get same effect as bubbling some water inside of the tent, or let's say having a decorative water fountain inside. The rh will raise. But since you put all your air through that water it will bring a lot of humidity, cause it adds up fast.

Regarding the wrong electrical numbers, I don't belive, or atleast I don't know any about that. If you want to clear that up shot me a pm or something. I mean if I said something wrong, please tell me so I learn the right way.
 

trouthugger

Active member
If I'm venting a closet tent through the closet doors, would it be better to cut vents in a solid door or just use a louvre vent door and open the vents for intake and exhaust?
 

exploziv

pure dynamite
Moderator
Chat Moderator
ICMag Supporter
If looks doesn't matter, just do the cheapest one that provides enaugh airflow. Just make sure you are really venting as in providing enaugh fresh air, and not just moving stale air around.
 
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