I have an AM CO2 regulator hooked up to a Fabco needle valve to a AM solenoid to an inline CO2 reactor.
I ran the set-up last week without running the solenoid, checked for any leaks and found none. The lowest PSI setting my regulator allows is 22 PSI which AM claims is the fixed range. I set my needle valve to run at 4 bubbles per second and finally achieved perfect 7.0 ph. A week after I'm out of CO2
I contacted AM's tech support to ask them if it's possible to lower the PSI setting to 10-15 which from what I read is the reccomended range. AM said they never heard of such a setting.
Even If I ran the solenoid to my timer I should at least get twice the CO2 duration or longer right? Especially if I only have the system on for 8 hours with the 2 hour interval mid-afternoon.
Am I doing something wrong or is my regulator bust? Should I just use the regulator's needle valve and take the Fabco out of the equation?

I ran the set-up last week without running the solenoid, checked for any leaks and found none. The lowest PSI setting my regulator allows is 22 PSI which AM claims is the fixed range. I set my needle valve to run at 4 bubbles per second and finally achieved perfect 7.0 ph. A week after I'm out of CO2
I contacted AM's tech support to ask them if it's possible to lower the PSI setting to 10-15 which from what I read is the reccomended range. AM said they never heard of such a setting.
Even If I ran the solenoid to my timer I should at least get twice the CO2 duration or longer right? Especially if I only have the system on for 8 hours with the 2 hour interval mid-afternoon.
Am I doing something wrong or is my regulator bust? Should I just use the regulator's needle valve and take the Fabco out of the equation?