C02 Calculator ~ Calculate How Long to Run your CO2 Tank

good looks my guy very usefull

munch box said:

Thanks A whole Bunch Bro. It REALLLy is a calculator. An easy way to fine tune your co2 tank for optimum levels

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Moving to indoor growing to be stickied, good find!!

This is a cool calculator. I'm getting interested in using CO2. My lights are sealed. I need to get educated more on the types of products out there. Can anyone boost me up?

hey guys,

what does the on time mean on the calculator? how long it should be on during a 12 hr light period?

NO, go to a welding supply shop and tell them you wanna fill Co2 bottles for paintball, but that you DONT WANT A SIPHON tank because you prefer to turn tank upside down it gives you more consistant fills, Now you go on ebay and try and buy a used Co2 controller, but buy a Co2 regulator cylinoid release from any ebay indoor supply store, they are bout $120 and in the beginning you can just use it on a timer, and use 30 min intervals ona very very low setting, run the air- line all around winding thru and poke tiny holes with a HOT PIN, and p;ug end, it will be like steroids

or you can buy a bag of a chemical mix that creates CO2 for a period of time but is nonstop and unable to control as far as I know

where is the calculator?

First page of this post and I have tested it recently and wow works like a charm its awesome if you have a cheaper Co2 setup and dont have the expensive PPM sensor with controller.

https://www.rollitup.org/grow-journals/384835-swiftgrow-journal.html

CO2 is the way to go. Gas them a few days during veg then gas them like crazy after the first 2 weeks of flower to get amazing buds. Reason I say wait the first two weeks of flowering is to cut back on stretch (unless you need them a bit bigger). If you have a room that leaks then shoot for .003 level instead of the suggested .0015. But try to seal the area as best you can because it can easily leak out (co2 is heavy so it will go out the bottom). I'm not so sure marijuana can't use the extra over .0015 anyway. Using CO2 increases bud size way more than adding some nute that probably won't do anything if you're already giving it everything they need. Sure, the setup can set you back about $450 (20lb tank is like $150 shipped on ebay 20lb is usually the size they carry at your local hydro so don't get a smaller tank because you'll have to take it to a air place and get it filled yourself, timer, solenoid emitter, refills) but you'll get it back pretty quick and the equipment will always be worth something (so it's not like throwing money away on nutes).

Co2 is the main ingredient used in photosynthesis and according to many books and sources can improve yields 20-30%. I think the percentage might be a little high at 30% but 15-20% is more believable, then again I have never seen a side by side test done.

Best of Luck
https://www.rollitup.org/grow-journals/384835-swiftgrow-journal.html

man.....i've been looking for those calculations for a while now.glad i just became a member..will post pics soon

What about air exhaust? This calculator only tells the viewer how long it would take your bottle to fill the room to optimal co2 levels in parts per million. Ok. But I pump out over 900 cfm in my room. I think an enviormental control is best. Good luck!

if the ambient air is 70 degrees and 10" under the light is say 85-91 degrees using co2 is air circulation still needed. does a fan need to blow on the plants to bring temps down to 80-85? is 90-92 degrees and co2 and convection alone idea or should a fan be blowing on the plants to bring the canopy temps down from 90 to 80?

heres the advanced and expensive way to do co2 but check out resultsView attachment 1409365View attachment 1409366View attachment 1409367

corners said:

isnt anything over 1500 ppm overkill?

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testing this. with multiple generations getting used to gradual changes (currently @ 3000ppm) it seems that the difference is minimal. I think you would have to do it over dozens of generations.

Hot do you sticky a thread?

I thought this newer link might help. With this calculator you can figure in dispersion as part of the equation.
The calculator makes the following assumptions:

* Co2 Enrichment System uses a 15 minute cycle timer, with two ON cycles per hour.
* Optimum enriched Co2 level is 1500 ppm (adjustable)
* Existing Co2 level is 300 ppm (adjustable)
* Co2 level returns to normal in 180 minutes, due to leakage and plant usage (adjustable)

http://www.hydrofarm.com/co2calc.php

My plants in a well sealed cea can draw 1500ppm down to under 350 in less than 30 minutes according to my meter, not sure where 180 minutes comes from.

Its just an example. It clearly states adjustable. So if your op is 30 mins then put in 30 not 180.

still not sure what u mean...so my veggin room is 3*3*8 so its tellin me that if i set my regulator to 1200 plus them other 300 already in the air i should be pretty darn close to 1500 is that correct???.. but its also tellin me that a 20 lb tank wont last me 1 hour can i please get some kind of help on this????