5
Fig. 1: Carbon dioxide and Calciumreactor
1. Working principle
The reactors are supplied with water at the water inlet (1). The flow rate should be adjusted that
way that the ph-value doesn’t exceed 8.3 during the day or sinks below 8.0 at night. The
CO
2
-
reactor‘s
pump circulates the water internally and mixes it with the injected carbon dioxide. The
CO
2
is connected to the injection port (2). The pump sucks the CO
2
in and through the rotation of
the impeller, the CO
2
will be completely dissolved in the water. Then, the CO
2
enriched water is
pumped below the Hydrocarbonate (10) of the Calciumreactor (5) and finally circulated. Thereby,
calciumbicarbonate is extracted from the Hydrocarbonate. This is exactly the combination which
corals need for their growth.
The outflow (7) is located in the top of the filter. From there, the water flows into the aquarium or
back to the filter tank. The carbonic acid can be added from a pressure bottle
.
IMPORTANT! Never close both, inlet and outlet valve. CO
2
may cause overpressure.
2. Starting
The reactors have a bayonet fastener. Before setting up, check the sealings and close the drain
cocks.
