I changed my C02 cylinder 2 days ago and I noticed after few hours that there is no more bubble comming out of my diffuser.
I cleaned in and restarted the bubble. It was good until 5 min later, no more bubble.
I disconnected everything (hoses, diffuser, check valve) to have only the cylinder, the solenoid valve and the bubble counter. I adjusted the bubble rate and after few minutes, no more bubbles.
So the problem is either the cylinder, the valve or the bubble counter.
Any ideas ?