Hi, I am a scientist and stumbled upon your website whilst looking for a CO2 diffuser. It seems you guys know more about this than the guys in our chemistry department! So was hoping you may be able to help. Anyway, I wont bore you with the details but I need a good way of getting CO2 into solution so it changes the pH of solution (as well as possible). I looked at ceramic diffusers and they look ideal! The problem is that most (if not all of them) have lots of metal parts, which I don't want in the reaction vessel. So I eventually found this... https://www.boconline.co.uk/en/proc...nation-for-aquaculture/solvox-b/solvox-b.html But not sure it's ceramic and they guy said it needs to be supported. Does anyone here know of a ceramic diffuser system that has limited metal parts? ideally it would be ~5.5" (14 cm) in diameter or bigger. Thanks for any help!