[grassmaker]

[quote=Fry;967808]From another site:
I read this in a school science site. To make cheap CO2 use vinegar and egg shells. Crush egg shells and put in a plastic container, then pour vinegar over egg shells.

I took a one gallon water jug, drilled a 1/4 inch hole in the top and plugged one end of 1/8 inch black tubing. Then stuck holes along the tubing for the gas to escape. Hang tubing near the top of plants, since gas is heavy.

did this work