I have recently set up a 110 gallon complete with the pressurized CO2
system from Dr. Foster and Smith. The system is of good quality except for the bubble counter. When the pH drops to the prescribed level on the low side reading of the pH controller it shuts off the system as it should. However, once the solenoid shuts off flow from the Co2
tank, pressure builds up in the Co2
airtube line from the reacor to the bubble counter. This appears to be due to the water that continues to circulate through the reactor (as the water pump continues to run all the time). I have just blown the second one-way value in my bubble counter, water then fills the bubble counter leaks around the value inlet and runs down the CO2
line towards the solenoid and the tank. Is this just a cheap quality bubble counter (complete with plastic one-way valve)? Are brass valves available with bubble counters or, more likely, am I just doing something wrong?