Aug 8, 2020 Thread starter #1 ShrimpKeeper Active Member Member Messages 265 Reaction score 27 Location San Antonio Texas If I wanted to make a yeast reactor (for co2) for my 20 gallon, does it actually work? How do I make it? How could I make a diy diffuser? Would an air stone work? Do I put the co2 closer to the plants I want to grow?