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CalcFeeder Calcium reactor user’s manual
After setting the correct gas pressure, connect the CO2 solenoid valve (supplied with the reactor) observing the
correct gas flow direction from the cylinder to the reactor as indicated by a small arrow on the solenoid valve
housing.
Make sure the connections are tight, retighten the connectors if necessary but do not use an excessive force as
this can damage them.
Connect the solenoid valve to “CO2 Input.”
Connect the hose from CalcFeeder PRO controller to “Water Input.”
The hose supplying water to the metering pump should be fastened in a dedicated holder and placed below
the water level at all times (this will prevent pumping the air to the reactor).
Route the “Water Output” from the reactor back to the sump (Important! The hose end must be below the water
level at all times) or to the DC-1 or DC-2 degassing column – bottom connector on the column.
Starting the reactor:
After making correct connections you can start your reactor. Proceed as follows:
1. Make sure CO2 is connected and the valve is open (the solenoid valve should be disconnected from the
controller and the controller should be disconnected from the power supply).
2. The main circulation pump should run and no air should be present in the reactor’s column.
3. Connect the solenoid valve to the controller and plug in the optical sensor placed in the reactor’s column.
4. Connect the power supply to the CalcFeeder controller. After the preliminary test, the device is ready for ope-
ration. As after the start there is no CO2 in the reactor’s column, the indicator light on the optical sensor will start
to flash red, and after a few seconds the solenoid valve will open and supply CO2 to the reactor’s column.
5. After a few CO2 feed cycles, its level should be adequate which will be indicated by the optical sensor light
on the LCD display (from yellow/red it will turn green).
6. During the first dozen or so hours of reactor operation the controller will feed CO2 and start the solenoid
valve rather often until water in the reactor’s column becomes sufficiently saturated with gas. Later the starts/
stops of the solenoid valve will be much less frequent and will depend only on the amount of water supplied by
the reactor to the filtration system in your aquarium.
7. In the first days of reactor operation set the metering pump flow to 300-500ml/h.
