Hello all just made 2 very cheap O2 generators for my rooms 1/2 gallon jug 12oz. coke bottle Fish tank tubing baking soda yeast sugar Working great !!!!
keep looking on this forum you may well find 450.000 others just like you so how you measure the ppm's with this invention ...lol good luck
I tried that years ago. The yeast seemed to want to grow everywhere in my space. Looked like mold all over my pots. Sent from my XT1093 using Tapatalk