Anyone else have trouble with this diffuser?
I've been using a Dr. Foster-Smith glass c02 diffuser on my DIY c02. It worked really great at first, producing wicked tiny bubbles. But now the built in glass check valve seems to be stuck. It won't budge at all, so now no c02 can be diffused, it was just building up in the line.
Has anyone else had this problem? Anyway to fix it? I'm about ready to chuck it and get a different one.