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That's pretty nifty. Not sure what CO2 does, I guess it gelps the grow though. Lots of growers use it. I can't afford something like that right now. This little system is $155.00.


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Carbon Dioxide Generators & Regulators
> Carbon Dioxide Regulators
> Hydrofarm CO2 (.2-2 cubic feet per hour) with Timer

A CO2 system releases gas from a carbon dioxide bottle (not included). Plants use CO2 during photosynthesis. Increasing the carbon dioxide level to 1500 parts per million has shown to increase plant growth up to 30%. The output is adjustable from 0 to 2 cubic feet per hour with the flowmeter. It also includes a solenoid that opens and releases the gas when power is applied. Our CO2 calculator will help determine what level to set the flowmeter. Timer included.

CO2 is an odorless, invisible, and non-flammable gas. It is also safe for humans in the maximum concentrations recommended for plant growth. The average level of CO2 in the atmosphere is about 300 PPM (parts per million). If the level decreases down below 200 PPM in an enclosed growing area, plant growth slows to a halt. Through the years of testing and research, the optimum enrichment level of CO2 for plant growth has been agreed to be about 1500 PPM. With CO2 enrichment, under good conditions, plant growth rates and flowering will increase 20-100%. CO2 can be used from seedling right through harvest.

Deliver growth-boosting CO2 with our user friendly, easy to operate system. With its programmable timer, it will automatically maintain ideal CO2 levels for optimum growth. For small to medium size areas select the COSYS, for larger than 10' x 10' areas, select the COSYS20

Part Number: 241151
Guarantee: 30 Day Money Back With Receipt
Dimensional Weight: 5 lbs



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http://www.rollitup.org/grow-journal...ndoor-6-x.html
my first journal - have a good day

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link for this CO2 generator system
Hydrofarm CO2 (.2-2 cubic feet per hour) with Timer
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http://www.rollitup.org/grow-journal...ndoor-6-x.html
my first journal - have a good day

i noticed this site says using a 20 POUND co2 tank thats gotta be alot!!! was woundering if theres any calculator for 20 OUNCE tanks?

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A stoner's a stoner no matter how riped

I go through 3 - 20gal. tanks a month in a 7x8 closet.

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My Gallery
Harvest a Pound Every Three Weeks

um.....ok..............

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A stoner's a stoner no matter how riped

3 - 20 gal tanks?!

I found 10 gal tanks for $120 ea 10 lb. CO2 Cylinder, CO2 Tank/Cylinder > CO2 > Saltwater Aquarium Supplies

How much are 20 gal tanks and how much are they to refill? Are you using a regulator on a timer, or are you just letting it leak?

Are all CO2 bottle created equally? I found that bottles for beverage machines are cheaper.

Beer CO2 & Nitrogen Gas Cylinders (Air Tanks) - MicroMatic

They have a 20gal for $109

I paid about $130 for my 20 gal tank.

I use a CO2 controller. It monitors the CO2 and keeps it at 1500 PPM. It also controls the heat and humidity. So when my exhaust fan kicks on the CO2 shuts off.

It costs me $17 dollars to fill the tank. CO2 added 4 oz. to my harvest. Now my flower room produces a pound every three weeks.

Attached Images

	controller.jpg (62.1 KB, 150 views)
	2weeks_growth.jpg (86.4 KB, 141 views)

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Harvest a Pound Every Three Weeks

Wow, this will definitely come in handy for me one day. Good post.

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I'm thinking of a Master Plan.......

So, using 6 bottles (8 week cycle) @ $17 ea cost you $102. And it added 4oz to the harvest?

How many plants were you harvesting? If you added 4oz to a 1lb harvest, that would be pretty good. If you added 4oz to a 10lb harvest . . . that's not as dramatic. You said 7x8 so you could be harvesting 50+ trees. That sounds like an 8lb harvest so an extra 4oz may not be worth the hassle. The money equation certainly works out well, but not that great percentage wise (assuming you had a monster harvest anyway).