You can get one for less than 5 bucks shipped, you can even get 2 for 7 dollars shipped. It'll take a while. All the cheap ones are gonna ship from asia. Look up Nano Glass Diffuser. These ones will work with diy yeast co2. I've done it before. Some people claim that diy yeast will not build enough preassure to work with a glass diffuser but i think they might have used bigger diffusers.
Dont really mess with [Ebay Link Removed] Now im a bit concerened that my diy co2 wont be able to have enough pressure for a glass diffuser. It is the stndard two liter bottle with a gas chamber.Any other sellers on here you can point me to?
Are you really set on using a glass diffuser? Those nano ones will work for sure. I did it with the standard 2L bottles but stoped using them because of the maintenance. Every few weeks, you have to remove and bleach it because of the scum that builds up on top of the ceramic disc. That scum causes the bubbles to come out too large. I find the best way to diffuse yeast co2 is to use a bubble ladder. You don't have to clean it and you get the advantage of seeing the bubbles so you can monitor the rate and when to replenish. You can get a bubble ladder at big als or ebay http://www.bigalspets.com/Plant-Gro...olor_map,price,size_name&searchRank=salesrank