Yeast and CO2
- Thread starter Raul Duke
- Start date
Zaphod420
42
I have Duke, fill an ale pale half way up with luke warm water, add 4-5C sugar, 1T bread yeast put a lid on it an airlock will spit out CO2 for around 7-10 days. I don't have a C02 monitor so can't say exactly how much a brew bucket puts out but the plants seem to love it.
Cheers, Z
Lanestrainley
Really Active Member
wayyyy back in the day I used to do this sort of thing. 1 cup of sugar can feed 8g of yeast activated @ 38c in 400ml 5.2ph water for about 6-7days. It does work but too much and the ethylene will build up and start punting/yellowing leaves.
Lanestrainley
Really Active Member
Lanestrainley
Really Active Member
It’s 1L of water not 400ml
Zaphod420
42
Totally a great handle!
For 10 bonus points what does Duke say while high on ether when entering the casino?
Dogs fucked the pope, no fault of mine. 
Lanestrainley
Really Active Member
Something about ether I think lolTotally a great handle!
For 10 bonus points what does Duke say while high on ether when entering the casino?
Dogs fucked the pope, no fault of mine.
Lanestrainley
Really Active Member
I love to freak out when someone fucks up like when the cops convention is on and buddy and his wife try to check in and “Keller” makes his wife cry…Look what you did!!!! Look what you did!!!! Look what you did!!!! Lol that’s been cracking me up for 24yrsTotally a great handle!
For 10 bonus points what does Duke say while high on ether when entering the casino?
Dogs fucked the pope, no fault of mine.
Lanestrainley
Really Active Member
Who cares, that makes it more unique with the wrong spelling. Mint
Zaphod420
42
Awe hell, somebody actually has it up on YT and here I go making a spoiler!Totally a great handle!
For 10 bonus points what does Duke say while high on ether when entering the casino?
Dogs fucked the pope, no fault of mine.
I picked up a CO2 monitor from amazon for $27. I took a baseline reading of the grow between 430-450ppm. The room is 4' x 8' with 7' ceiling height. I used 2 bottles & 1/4" tubing to make the CO2 generator. Filled bottle #1 with 6 cups of warm water, 3/4 cup of sugar & 1 packet of yeast. On day one I had readings of 2k+. Day two the level were about 1200. Day three they are down to around 700. I'm happy so far with the initial results just gotta find a way to may it last longer.
Hopefully it works well but you almost certainly didn't buy a C02 meter for $27. The sensors alone cost more than that.
What you got is called an eCO2 monitor (e for estimated). They actually meaure VOCs and use a formula to guestimate
an equivalent CO2 level.
A little more sophisticated setup using citric acid and baking soda:
What you got is called an eCO2 monitor (e for estimated). They actually meaure VOCs and use a formula to guestimate
an equivalent CO2 level.
A little more sophisticated setup using citric acid and baking soda:
That's exactly what i bought, an air quality monitor. I am not concerned at this point about the precise level of the CO2. I am only interested in knowing if the levels are increasing or not. I measured the room for a day or so without my homemade CO2 generator just to see if the monitor was gonna give a stable reading. Even if the reading might be off by 20% it is still telling me if the levels are going up. I know that CO2 can get too high for people but can it be too high for plants? Can I reach dangerous levels with my homemade system?
So long as it shows you the trend, it should be useful. I've tinkered a fair amount w/ homebrew CO2. I found the best results using the $20 aquarium setup I posted above. It has a metal "acid" ball and a magnet you can use in conjunction with the needle valve to regulate the output. It worked surprisingly well as confirmed by my CO2 sensor. I have a tank now, mostly so I can control the solenoid, and less labor; not much more expensive in the long run as well.
Thanks for the info. I'm just dipping my toe in the CO2 enhancing world. Won't be my last set up I'm sure.
Lanestrainley
Really Active Member
Always remember to make sure you’re paying attention to the nutrient uptake, if everything else is on point, the plants will require additional elements. Just keep ‘em green.