Home CO2 Project

Yes, the sweetspot is, quality vs quantity, when it comes to the yeast mixture. Using smaller containers for smaller grow areas, can be just as effective, albeit it with an increased frequency of liquid replacement. I use half of those volumes (because of my small grow area). I can still get almost two weeks of consistent bubbling (bubble every 3-4 secs ) The trick is an individuals experience, and what exact measurements work for them. Thanks for the review on this simple DIY!! 👌👍

Step 1. Depending on your tent size will depend on how big or how many containers you'll need. I started in my 40x40x80 Vivosun with a 1 Gallon milk jug and a smaller bottle (any size water bottle and above will do) Step 2. Use aquarium tubing and a drill bit or screwdriver that is the same size as the tubing. Cut one hole in the cap of the milk jug. Cut 2 holes in the other container cap. One hole will feed the Co2 from the jug the other will send it out to the plant. Refer to the pictures for tube depth. I recommend the milk cap go in at least an inch. From the milk cup to the other cap that one will need to touch the bottom. The other tube will go in the second cap one inch down. If you can connect an air stone to help dissipate the Co2. Step 3. Fill the milk jug with 2 1/2- 4 cups of sugar. Then fill the milk jug with warm not hot water 3/4 full. Cap then shake to dissolve the sugar. Then add 1TSP of yeast (more yeast will make more Co2 but will break down the sugar faster). Also Brewers yeast is preferred but bakers and fast rising work just as well. Shake again to activate the yeast. Step 4. Cap both containers and then wait an hour to see bubbling in the second container. This will indicate it is working. After that connect the end of the tube with the stone to a fan or a low middle area where it can work. As Co2 is heavier than air it's best to keep it low and allow it to rise to get maximum return.