DIY C02 Setup for Grow Tent 

Simpler is to pin prick a balloon and stretch it over the bottle neck. Balloon will expand and gradually release CO2. When balloon goes deflat3s either shake mixture or replace.

You need to paint the bottles with black primer, the light through it will give you things you do not want! Thanks for your knowledge. Peace ✌️ ☮️

Ayy I dig your setup! Hope your day is goood!!

Very Detailed and easy to follow I have a 3d printer would you share your files for the bottle caps ? Thank-you for your time and effort to share

With that, you might as well add fruit and make a wine/mead.

thanks you i forgot how to and you reminded me ty

i like useing this method to produse co2. I allso set up my co2 device inside the grow tent on top of the light so my solution will warm up which helps the fermenting process. useing this method, my co2 canister starts high levels of co2 with in 15 min.

Hey ! Awesome video! Wouldn't happen to have an stl file or a link to those caps?

nice one

Hello great vid. I've been looking into making one of these types of diy co generators. Mind sharing the link to stl of caps for others with 3d printers? Going to make a diy co2 sensor (microcontroller based). The average co2 level outdoors is between 250-400ppm. Indoor co2 levels are generally higher. I'm told the plants i grow benefit from co2 levels in the 1000-1200ppm range to increase yields. Wonder how much these diy generators produce and if beneficial in open unsealed tents grows. If you are interested I can report back the amount of co2 your solution provides with my 2x4 setup. I hope to find out if this generator or multiples of it are able to bridge the gap to the desired co2 levels. If not, still a fun little project to see what actual amount of co2 is produced.

U can add gelatin it slows the alcohol process works great for me

How long does it last? How often I must change the set up with new water ,sugar Nd yeast .? And how many times I should do this each week? Thanks

How to you avoid losing all that CO2 when you're running an exhaust fan? My fan, which I have to run to keep the temperature down in the tent, sucks out virtually all the CO2 my 5-gallon DIY-bucket-rig is generating, and it's output is quite high. It was great in the cold winter months but isn't working in the summer. Any ideas? Thanks for the video.

Hi how are y? Do you had any problem with your zipper the vivosun tent? Thanks

Think about the head space, you want to keep the water high enough, but not so high you get foam through the generator cap. CO2 is HEAVIER, so the first bubbles are just air pushing out until the CO2 reaches the cap. Then, on the indicator bottle put a hole in on the side and run that water just below the hole so it flows out, not fill another bottle. I hope this helps.

I made one with 5x your recipe in a 5 gallon clear blue water jug bought from walmart and added an air stone to keep it constantly mixing as well as an aquarium heater in the sugar mix to keep temps around 70-80f all times. The exhaust tube is taped behind the fan that blows over my canopy. Been 3 days now and my 4x4 tent just smells like bread and liquor but CO2 PPM still at what it started at around 400ppm-500ppm (sensor in the canopy)... Not sure how effective this is, maybe it just takes time but so far it has not done anything for me. Also I made sure the yeast was activated in 105f water for 15 minutes before mixing it in. Just my $0.02 is all.

Any idea at what temp the reaction stops or slows? Wondering if a heating pad under the bottle connected to the light timer would help increase lights on production

It really work, but this amount is only for fresh transplated seedlings ,half feet (15cm) big, in small 1,5x1,5x2 tent sealed with duct tape over all zip and without any holes and venting... For mid veg plant 1ft tall and wide you need 4x more yeast, that means, you need 4x more water and sugar (bigger amount of water and sugar=longer live) . In high temps (95F or 30C) it generate nice amount of co2. But for 3x3x6ft big tent with 4 big plants in mid-late veg stage, you will need at least 10gal (40l) jerrycan with 4 cups of yeast and 40 cups of sugar. Also big tents are not so sealed, so you need place tent in sealed room, where you can see big leakages of CO2. Cca 1000ppm in tent means 700-800ppm in closed room... In night you need know, how to stop dosing co2 in tent. After heat up, it boiles really crazy and can in hour after light off rise up to 5000ppm. GL and HF with testing, at 1st, with at least 2 co2 sensors (inner and outer with alarm, that you stay alive :D ) and fan circulating air from bottom of tent! Dont forget venting in room in night... Btw sealed tent need have A/C unit with dehumidifiing, power od cooling must be equal with power of light, and dehum capacity same as daily amount of waterring water

How much does it add bc when I made wine the same way my co2 didn't go up much with 4 2ltrs in a closet...

wonder if citric acid and baking powder would be a better mixture

why does the tube have to be in the clean water too?

How often do you have to make new ones?

Very nice hat off to you 👌. Is there a reason why one bottle is bigger than the other

Does it have measurable effects? Have you seen how much this raises co2 levels?

How long does that set up last ???

try using mashed mango and grapes with some active yeast. the plants love it.

For how much days you use this? Is good for one cycle ?or you need to put some sugar after or do other things?

why me it do not work !? i try like 6 time

2:07 just under 100 degrees

You need to get a ton of stuff dialed in before you start worrying about co2. For the average at home grower co2 isn't worth the hassle. Unless you're growing in a sealed, climate controlled grow room then co2 probably won't make a noticable difference in your results. Just use quality lights like HLG, dial in your nutes and keep VPD on point.

So I just made a mix of sugar/warm water/ yeast in a bottle and that’s it the bottle is in the tent just open sitting in the Gorilla Grow tent pouch on the right side. Am I CO2ing? Seems to me the bubbler bottle is just to show that it’s working. Or am I wrong? I want to implement this in my tent. If anyone has tips I’d appreciate it. Happy growing. 🤙

😢complete waste of time and effort Co2 is heavier its not getting to any part of the plant's It has to be above or beside the lighting if you had a meter this would be confirmed

You couldn't bother to show it bubbling thru the second bottle?