Hi, I have a CO2 mixer on the return feed to my tank. It is the sort with a chamber fed by water returning to the tank from the external filter that drives a paddle and has a CO2 feed at the top.
( like this )
The problem is that despite having two CO2 non-return valves installed when the CO2 is off water travels up into the CO2 feed pipe - it doesn't reach the non-return valves because I increased the length of CO2 tubing and put in a couple of loops... But surely when the CO2 goes off water shouldn't be able to push its way up the feed tubing...should it??
Any advice would be warmly appreciated!
( like this )
The problem is that despite having two CO2 non-return valves installed when the CO2 is off water travels up into the CO2 feed pipe - it doesn't reach the non-return valves because I increased the length of CO2 tubing and put in a couple of loops... But surely when the CO2 goes off water shouldn't be able to push its way up the feed tubing...should it??
Any advice would be warmly appreciated!