Maybe I should get rid of my chinese bought c/v and use a simple plastic one.
What's you're findings on the glass in-line bubble counter (again chinese)? Well, ok, aquaticmagic. I don't particularily like it as some water goes back into the c/v, which does it's job and stops it, but then there is a noise as the bubbles hit the water trapped in the c/v. The bubbles through the b/c don't make as much noise as one doesn't have the plastic stop bouncing up and down.
I assume AE have a better b/c, and then cheap plastic c/vs may be the way forward.