He is right but one thing that was not mentioned is he has a mini split hanging in the tent so there is very little leaking out of the tent. Also in you consider CO2 is heavy and wants to settle at the floor it might even be less leakage.Alright since this is a thread about CO2, lets clear some things up.
Atmospheric CO2 is about 400PPM.
Desired is 1200 (for the sake of this post, YMMV)
@dreamnfox has a 4x4x8 (not sure on the height but close enough)
So 128 cubic feet approx. It will actually be less, so this is conservative.
1 pound of pure CO2 is 8.7 Cubic Feet.
You want it to be 800PPM increase, or .0008X
Hopefully you see where I am going with this, we are dealing with minuscule amounts of CO2. CO2 makes up .04% at atmospheric and we want to go to .12%. A small leak in the tent will leak 99.88% Nitrogen, Oxygen and other gasses and only .08% of the CO2 you are injecting. And only then if you are pressurizing the tent.
When my CO2 controller asks for a shot of CO2 from the tank, it runs about 5 or 6 seconds, and does that maybe 3X per hour. It is not a continual usage, and at night is zero. Size and stage of growth also a factor.
FWIW my basement sits at about 525PPM when I am not growing, and gets up to 575 or so when I am running both 4x8s and injecting. So yes, leaks but the cost is pretty much irrelevant if you are paying $41 for 870 Cubic Feet of it.
I just don't want anyone to be scared away from CO2 if you have a good reason to use it. It can be a game changer in terms of yields and growth rate. The cost is a tiny fraction of the ultimate reward, and can even SAVE you money since you grow faster so you get the same amount of end product while running your lights, etc for less time.
Correct but we are talking about a sealed room however you do it. Under CO2 plants don’t mind high 80s in temp. Low 80s is better tho. If you don’t have good cooling CO2 can be a part of the fix. But the mini split is obviously ideal so you have total control over VPD and set points.He is right but one thing that was not mentioned is he has a mini split hanging in the tent so there is very little leaking out of the tent. Also in you consider CO2 is heavy and wants to settle at the floor it might even be less leakage.
Moe Red I have never found the plants to like much heat, anything over about 83 they start getting pissed off for me. That is with CO2 enrichment and I have ran it as high as 1500. So I usually shot for 81 or 82. I have found that to be ideal for me.Correct but we are talking about a sealed room however you do it. Under CO2 plants don’t mind high 80s in temp. Low 80s is better tho. If you don’t have good cooling CO2 can be a part of the fix. But the mini split is obviously ideal so you have total control over VPD and set points.
However you do it you have to seal the room.
@dreamnfox can you put the bag and the pluse pro in a large box for a couple hours and see what happens?
Nice read, thanks moe
I definitely plan on trying co2 in the near future
41$ for the air, how much for the tank?
That’s not bad at all compared to everything else you’d spend for a decent grow.
And after fast turn around
I’m not suggesting to try for that high a temp. Bugbee did testing on this varying temp and CO2 amounts and to summarize 82F and 1200ppm are the sweet spots but it is strain dependent.Moe Red I have never found the plants to like much heat, anything over about 83 they start getting pissed off for me. That is with CO2 enrichment and I have ran it as high as 1500. So I usually shot for 81 or 82. I have found that to be ideal for me.
Alright since this is a thread about CO2, lets clear some things up. Atmospheric CO2 is about 400PPM. Desired is 1200 (for the sake of this post, YMMV) @dreamnfox has a 4x4x8 (not sure on the height but close enough) So 128 cubic feet approx. It will actually be less, so this is conservative. 1 pound of pure CO2 is 8.7 Cubic Feet. You want it to be 800PPM increase, or .0008X Hopefully you see where I am going with this, we are dealing with minuscule amounts of CO2. CO2 makes up .04% at atmospheric and we want to go to .12%. A small leak in the tent will leak 99.88% Nitrogen, Oxygen and other gasses and only .08% of the CO2 you are injecting. And only then if you are pressurizing the tent. When my CO2 controller asks for a shot of CO2 from the tank, it runs about 5 or 6 seconds, and does that maybe 3X per hour. It is not a continual usage, and at night is zero. Size and stage of growth also a factor. FWIW my basement sits at about 525PPM when I am not growing, and gets up to 575 or so when I am running both 4x8s and injecting. So yes, leaks but the cost is pretty much irrelevant if you are paying $41 for 870 Cubic Feet of it. I just don't want anyone to be scared away from CO2 if you have a good reason to use it. It can be a game changer in terms of yields and growth rate. The cost is a tiny fraction of the ultimate reward, and can even SAVE you money since you grow faster so you get the same amount of end product while running your lights, etc for less time.
I am out of town till Saturday but i certainly will when i get homeCorrect but we are talking about a sealed room however you do it. Under CO2 plants don’t mind high 80s in temp. Low 80s is better tho. If you don’t have good cooling CO2 can be a part of the fix. But the mini split is obviously ideal so you have total control over VPD and set points.
However you do it you have to seal the room.
@dreamnfox can you put the bag and the pluse pro in a large box for a couple hours and see what happens?
I’m not suggesting to try for that high a temp. Bugbee did testing on this varying temp and CO2 amounts and to summarize 82F and 1200ppm are the sweet spots but it is strain dependent.
What week of flower are you in?I’m not suggesting to try for that high a temp. Bugbee did testing on this varying temp and CO2 amounts and to summarize 82F and 1200ppm are the sweet spots but it is strain dependent.
This is my LED tent right now
View attachment 1250568
On my HID tent I let it get up to 82 average.
Flipped a week ago, so still looking like Veg. Preflowers forming. Whatcha thinkin?What week of flower are you in?
Took me a while to try this but here it goes. I placed the bag in a curing bucket, with the pulse pro. It has a recharge battery but not sure how long it lasts. I will post the first screen shot, then a few more today to see if we get a rise.Correct but we are talking about a sealed room however you do it. Under CO2 plants don’t mind high 80s in temp. Low 80s is better tho. If you don’t have good cooling CO2 can be a part of the fix. But the mini split is obviously ideal so you have total control over VPD and set points.
However you do it you have to seal the room.
@dreamnfox can you put the bag and the pluse pro in a large box for a couple hours and see what happens?
Yes, 6.5 gallon pailThats really cool. So in a sealed, 5 gal pal?
Trying it now. I have a massage starting soon so i will put the bucket in after that.OK so I'm weird, but I would take that sensor out and put it back in the tent.
Let the exhale do it's thing in the bucket for a while.
Put the bucket in the tent. Turn off the exhaust fans for this. Then open the pail again and see if the CO2 is enough to raise the level in a larger space.
She’s gonna blow!!!!Now 2k
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