I did this with a bucket and aquarium tube coming out with a T section over each plant. It's my first grow so I really couldn't say if it made a difference. Everything I have read says it did. Remember that light kills yeast and if you don't add fresh sugar water every so often too much alcohol will build up, killing the yeast.
Baka123 Reviewed by Baka123 on . how to make a Poor mans CO2 Its very easy. It will run 24/7 but will need a little maintanance. You will need a one gallon milk jug. Fill it 3/4 way with warm NOT HOT OR COLD water. 2 cups pure sugar 1 pack dry yeast(anykind of yeast that still works) add the sugar and shake to mix it up. Then add yeast to mix in and skake for a few seconds. set the milk jusg above your plants the yeast will produce CO2 and it will overflow the milk jug and shower down on your plants. Rating: 5