Should I use several check valves on my CO2 installation?
True to the motto, better safe than sorry, some aquarists install several check valves in the same circuit. For example, if you use the JBL PROFLORA direct inline diffuser or the JBL PROFLORA CO2 Count Safe bubble counter, you already have an integrated check valve. If you also use a separate check valve (JBL PROFLORA SafeStop), there may be problems with the opening of the check valves. This effect can be observed if, after the night switch-off or interruption of the supply with the controller, the addition does not restart automatically. Please note that, depending on the working pressure and the number of bubbles, a few minutes may pass between the start of the supply and the visible entry of CO2 into the aquarium.
Each spring in a check valve needs a certain pressure to be opened. Several springs can therefore interfere with each other and, depending on the distance between the two check valves, reduce the pressure at the spring to such an extent that it remains closed. Therefore, please always use only one check valve for your CO2 installation.
The water is disappearing from my bubble counter – where’s it gone?
The bubble counter with integrated check valve JBL PROFLORA CO2 Count Safe has a check valve on the inlet side into the container. It is located on the IN side with the riser pipe. This prevents water from getting out of the bubble counter in the direction of the CO2 bottle or other attachments in front of it.
For the start-up and after each cleaning, fill the bubble counter with water up to the mark (fig. B in the instructions for use). During operation, the water level in the bubble counter may fluctuate, depending on the amount of CO2 added. A large number of bubbles with high working pressure can cause the water to be displaced from the chamber. It is important that the bubble counter is not installed at an angle so that water can run out. Normally, the water level remains unchanged and should be checked weekly.
Once CO2 stops entering, the water from the aquarium will return to the bubble counter with a time delay. In the bubble counter, the water flow is stopped by the check valve at the inlet (IN). There is therefore no cause for concern. You can quickly detect a defective check valve yourself by noticing water in the hose between the CO2 cylinder and the check valve. Please also refer to the FAQ on the use of two check valves at the same time.
How can I remove the hose from the device?
At first the air hoses and special CO2 hoses can easily be pushed on the connection piece. The hoses harden more and more as the months go on and can only be removed from the connection piece using great force. If you pull the hose hard it will only strain the connection, which could, in the worst case, even break off. Instead cut the hoses you want to remove laterally at the ends and carefully remove them. For this it’s always advisable to install hoses with some reserve in its hose length.
Is my SafeStop damaged if I can’t blow through it?
The retaining spring in the check valve fits very tightly and ensures that no water can return. Therefore the air pressure of a diaphragm pump or our breath is not strong enough to open the spring. The valve can be opened by the pressure of the ProFlora bioCO2 systems and also the m and u series. Check valves used in air systems have a smaller counter-pressure and are also part of the JBL range.
Is it bad if water runs into the bubble counter?
If water runs back into the bubble counter, that’s not a problem as long as the water is not drawn towards the night time shut-off from there. The excess water is normally pressed out of the system again during the day.