co2 purchase

[muordeeb]

It's been a while but I can finally get back to growing. This go round I would like to add co2 to my grow room. Where can I go to purchase or rent a co2 tank without some type of license with no questions asked.

muordeeb Reviewed by muordeeb on 08-04-2008. co2 purchase It's been a while but I can finally get back to growing. This go round I would like to add co2 to my grow room. Where can I go to purchase or rent a co2 tank without some type of license with no questions asked. Rating: 5

[stinkyattic]

Go to a compressed-gas and welding supply store, such as AirGas or Merriam Graves. Look on the corporate website for locations.

A small (24") CO2 tank is the correct size for a hot dog cart soda gun. And we all are caterers, right? I think I paid $170 for mine with the first fill. It has given me a lot of freedom in setting up my ventilation system; I know that CO2 is no longer a limiting factor in plant growth, even though the only grow space available to me after the last time I bailed out was a concrete cube with no freaking fresh air source... hahaha.

The regulator is available at a hydro shop. I got the Hydrofarm system, which comes with timer, regulator, and solenoid, and everything to deliver it with. It's really nice. Yay, CO2! Have fun with it, and don't forget that CO2 is heavier than air, so grow in the basement for safety, and always TETHER any type of compressed gas tank to a fixed object such as the wall or a sewer pipe.

[allrollsin21]

Is it best to have a closed room system if using C02? As in using an air conditioner for cooling instead of a vent fan, as to not suck out all the CO2. Or do controllers allow for CO2 and vent fans, by being configured a certain way?

[stinkyattic]

How fancy do you want to get?
A system that is closed means less waste, but you need more creativity in cooling.

Here's the setup that I have run successfully:

My space was a cellar that stays cool on hot days.
The total footprint is about 6 x 20 feet with a 6.5 foot ceiling.
The end of this room is blocked off by a wall that has 2- 6" holes drilled in it with a hole saw. WARNING! 6" hole saws KICK like a damn mule!
There is also a 1 x 2" rectangle cut out that is large enough to let a light cordset pass through.
The lower hole is the intake, and is set DIRECTLY in front of the cold air OUT part of a portable a/c (9,000 btu, about $300 at home depot).
The a/c is vented out the cellar door, that has a 4" hole cut in it and masked by a louvred dryer vent cover.
The rest of the space is just the 'lung room'. There's an area where I keep my two ballasts up on milk crates off the floor, my co2 tank and regulator, an indoor-outdoor thermometer (the probe is stuck through the lamp cord hole, along with the tube from the CO2 tank, and they both hang down into the middle of the room), and a ~260 cfm muffin fan that is pulling air OUT of the 6x6x6 2k bloom cube and into the lung room for cooling.
The walls of the lung room are masonry and there are fans blowing within the room. Air cools off quickly once it leaves the bloom room.
CO2 enrichment is functionally of the entire space, since the 2-room system is actually for climate control in a closed but divided 'grow suite'. Since I'm enriching the rest of the suite, I keep my moms in there too, just obviously out in the lung room.
Hot air is moved out of the bloom box via a 6" open-ended air-cooled hood. It then flows over light#1, through a ~4" straight length of duct, through light#2, through a 2' section of 6" duct that passes STRAIGHT through the wall, then through the muffin fan, then through an odorsok and into the lung room for cooling.

I run both active and passive cooling, using a/c for the 'active' component and thermal mass of the brickwork for the 'passive'.

Controllers allow for both; you will want to have a high temp sensor/controller that allows for rapid exhausting of your room if temperatures over ~85'F are detected at the probe. I don't have my system configured this way, as I am now assured that the cooling I run is sufficient and temps have never required emergency exhausting.

I hpoe that helps.

[allrollsin21]

Thanks for sharing that. I read over it twice and understand some of it. I am not the most technical person, nor am i much for an audible learner.
Still stuck in nursery school with my picture books! I will continue to read that email a few times and then maybe bother you with some specific questions.

[stinkyattic]

No problem at all. I will be here
Maybe I will go over to my buddy's house and get some pics of the space I set up for him, that is the one I described here.

[allrollsin21]

well that'd be swell...or i'll fly you out here to CA and hire your services. You can just point and bark orders and the dogs and I will do all the labor. They understand bark.:thumbsup:
Really though those pictures would be wonderful for the learning curve

[Mississippi Steve]

15lb CO2 fire extinguisher....just make sure its not a dry chemical one.

[muordeeb]

Thanks, this really helps.:rastasmoke:

[jobe]

I rented my co2 bottle and told them I used it 4 paint ball they took the money and cared less