I strongly recommend getting a bubble counter and a check valve. the bubble counter is invaluable when it comes to regulating your CO2. The check valve is just a safety thing. Just incase water siphon's back to you CO2 source.
As far as burbing the bubbles. If your CO2 supply is continuous, than yes the bubbles will build up in the diffusion chamber and just "burp" to the surface occasionaly. If your CO2 supply were controlled by a solenoid valve, like mine. Than any remaining CO2 just sits at the top of the diffusion chamber until you turn the unit back on.
Lyle
As far as burbing the bubbles. If your CO2 supply is continuous, than yes the bubbles will build up in the diffusion chamber and just "burp" to the surface occasionaly. If your CO2 supply were controlled by a solenoid valve, like mine. Than any remaining CO2 just sits at the top of the diffusion chamber until you turn the unit back on.
Lyle
