Adding CO2 @ 9000 ft

[coyote]

SETUP: So my flower tent is 4.5' x 3'. I'm moving about 400cfm (when the light is on) with a 6" inline fan through a cooltube and a carbon filter, which in turn are sucking fresh air in through two 6" openings in the tent (thinking about adding a booster fan to one of them because the tent walls are caving in with the amount of suction). I realize the yield would increase with if I could get 1500ppm CO2, but I cannot afford to have a tank & regulator at this time.
QUESTION:1)Is there enough fresh Rocky Mountain CO2 going through my tent to grow quality buds or do I need to suppliment---I live at 9000ft?
2)Does anybody know how many ppm are up here?
3)Can I use the yeast method to boost my CO2?
My goal is to do this grow as cheap as possible, but I do want to grow some quality buds.
Thanks again friends

 

[Seamaiden]

Can't answer everything, but can bump. I do believe you can use the yeast method, don't know how much you'd have to use or how big you'd have to go. I would surmise that, rather like the oxygen levels at that sort of altitude, CO2 levels are going to be lower as well.

I would probaly go ahead and add an active intake if the tent walls are sucking in too much, seems to make sense to me.

 

[norcal215]

get a ten gallon rubbermaid tote and drill like 25-30 1/8" holes in the lid aadd 5 gallons of water drop in 2-3 lbs of dry ice and put lid back on the put a fan near the tote thats how i used to do it ghetto style, it works do this three times a week through flower youll see gains

 

[altitudefarmer]

Correct, Seamaiden, almost all gases are less ppms at higher altitudes, with exceptions of helium, etc.
Coyote, look up VPD. If your VPD is dialed in, adding CO2 is basically a waste of money.

http://urbangardenmagazine.com-vapor-pressure-deficit/

 

[Seamaiden]

Correct, Seamaiden, almost all gases are less ppms at higher altitudes, with exceptions of helium, etc.

Yep. Thusly, no scuba and flying within 24 hours of each event.

 

[Smokey503ski]

You will be wasting your time and money with making your own co2 contraption.

You said you are running intake and exhaust. You cannot keep your enviroment at 1500 ppm's using intake and exhaust fans. Especially with a home made co2. It won't work. You will be basically pissing against the wind trying to accomplish what you want.

Co2 is best for sealed rooms. When using in a exhausted room you are exhausting all the co2 you put in the tent.

If you want to try it go ahead. Your PPM's are around 300-400 up in the Mountains. Sometimes more. I lived in Summit County for a while and used a co2 controller and it read around 350 on average when not using co2.

Just keep fresh air coming in and exhaust going out. Keep it just like you are doing.

 

[altitudefarmer]

GREAT point. I failed to tell you that in order to run CO2, you'd need to "seal" the tent and just run the venting through the cooltube. ++rep, Smokey!

 

[homebrew420]

Altitudefarmer nice little article there. Thanks. However telling anyone that CO2 is a waste of money even with the variables is, imo, not true. In fact it seems to help an awful lot of beginners because it acts as a buffer to overfeeding high tems high humidity,ect. But I know I will be paying a little more attention to the VPD. THanks again.

Good luck Coyote.
Peace

 

[coyote]

Thanks Everyone!
This is some really great info. It's great to hear from other high-altitude growers. I think since this is just a test-grow for the new setup, I will just keep pumping air through and see how the buds form. If they don't look good I will just vent the cool-tube straight through and suppliment. I really appreciate the pointers and look forward to hearing anything else you folks have to say.
Peace:rastadancing:

 

[DrCALIGREENTHUM]

SETUP: So my flower tent is 4.5' x 3'. I'm moving about 400cfm (when the light is on) with a 6" inline fan through a cooltube and a carbon filter, which in turn are sucking fresh air in through two 6" openings in the tent (thinking about adding a booster fan to one of them because the tent walls are caving in with the amount of suction). I realize the yield would increase with if I could get 1500ppm CO2, but I cannot afford to have a tank & regulator at this time.
QUESTION:1)Is there enough fresh Rocky Mountain CO2 going through my tent to grow quality buds or do I need to suppliment---I live at 9000ft?
2)Does anybody know how many ppm are up here?
3)Can I use the yeast method to boost my CO2?
My goal is to do this grow as cheap as possible, but I do want to grow some quality buds.
Thanks again friends

Typically even outdoors co2 levels is around 4-500 ppms
being in a house even less
you can use the yeast method but to some extent

i would suggest getting the co2 booster its like 70 bucks
it is a tub filled with a substance that gives off co2 through a small mini air pump connected to 1/4 tubing that you put behind (intake) your oscillating fan so it boost up your growroom. Had one for a tent worked perfect.

Hope that helps bro :party0045:


Keep It Green-Doc

 

[Smokey503ski]

If you go by the above post idea, you will be out $70 bucks without proof of it working. You will not raise your PPM's by much if any if you are running intake fans and exhaust fans 24/7.
You will need a sealed room, A/C, Dehuey. Or you are wasting the Co2 being ran behind your intake like mentioned, Goes in the tent and right out thru your exhaust.

Actually if you want to try it, Please do. But do keep a grow log of it to see if it worked. Or if you get one of those crappy co2 buckets that dont work, see if you can borrow a co2 ppm meter for a minute and put it in your room while the co2 bucket is going to see what the PPM's are. And also take a reading with it out in the room.

 

[DrCALIGREENTHUM]

If you go by the above post idea, you will be out $70 bucks without proof of it working. You will not raise your PPM's by much if any if you are running intake fans and exhaust fans 24/7.
You will need a sealed room, A/C, Dehuey. Or you are wasting the Co2 being ran behind your intake like mentioned, Goes in the tent and right out thru your exhaust.

Actually if you want to try it, Please do. But do keep a grow log of it to see if it worked. Or if you get one of those crappy co2 buckets that dont work, see if you can borrow a co2 ppm meter for a minute and put it in your room while the co2 bucket is going to see what the PPM's are. And also take a reading with it out in the room.

I think thats a no brainer that hes not going to raise ppms with his in/out going off. But a co2 booster is "better than nothing" (I think they used to say) especially when you dont have the cash and your just not willing to spend the last of your cash on some co2. So i think if he had cash for an ac AND a dehumidifier he would buy his co2 first, lol :D dont you think?

Just Keepin It Green-Doc