Hey folks, I built my DIY yeast co2 injector for my 63 gal tank, it works
great! just used a 2 liter bottle, tubing, fine airstone w/ check valve...
Each concoction produces co2 for about a week and a half... I am very happy
with it

So here is my question: Does anyone know of a good or common place to get a
blow valve? (I.e. a valve that will discharge within a certain PSI range) I
would like to make my DIY system fault tolerant, but I am just stumped on
where to get the blow valve... any ideas? Thanks!

-Jason