any one have any idea why my bubble counter is always stuck even i had change out a new check valve and did a good job clean up on my regulator celenoid.
If you're running a PH controller it might be that the PH is at the correct level so the solenoid shuts off the CO2 until the range changes and then it opens to add CO2 again. You don't want to constantly add CO2 unchecked as the PH will drop and turn your calcium media to mush.