I recall a few weeks back someone ( sorry, I forget who, ) suggested
using yeast & sugar to produce CO2 in a small jar or similar inside
the terrarium. I am just in the process of doing this myself - I
figure it might be a good idea to stop the neck of the jar with
cotton wool or suchlike, just in case escaped yeast might cause a
problem in the terrarium, or use an external jar connected by tubing.
It's certainly a lot cheaper than cylinders...
Just my 2 pennorth...
Happy growing,
Peter
Peter Cole | carnivor@bunyip.demon.co.uk | snowing...
Swansea, WALES | |