Aquarium plants carbon dosing regulator

[Pife]

So I have had me CA reactor offline for 4 days to lower my alk, CA, and mag. . All I did was shut it off with my apex. I was still flowing water through the reactor and couldn't achieve the same pH as in my display tank. So this morning I broke out a new lab grade pH probe calibrated it and stuck it in the reactor. Same result still low enough pH to be melting the calcium carbonate. So I shut off my CO2 tank. Within an hour my pH begin to rise and the gauges on my regulator zeroed out indicating that it has been leaking enough CO2 into my reactor to keep melting the media. Has anyone else had this issue with this regulator?

 

[theatrus]

I've destroyed mine with back-flow from dodgy check valves. The small solenoid diaphragm element they use did not respond well to salt water. Its likely the same issue, just in reverse. I was never able to find a manufacturer for that part.

I loved it, but went back to a classic needle valve which requires tweaking when changing out my 20lb bottle (which is super annoying). The AP model was truly set it and forget it.

 

[Sphack]

Good to know. Any recommendations for good check valves? I have an AP and was looking at using it with Milwaukee ph meter for controlling the co2 with the apex monitoring.

 

[Pife]

I use a German one. . It's supposed to be the best.