Aqua Medic KR 400 Mode D'emploi page 9

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CO
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Fig. 2: Calcium reactor 400 beside a filter tank or an aquarium
4.) Y-piece (connection for CO and water)
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5.) Adjustion valve for waterflow
6.) 6/4 mm tube (CO and water inlet)
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7.) 8/6 mm tube (water outlet to drip counter)
8.) T-piece for bypass
9.) Pressure side of the circulation pump
10.) Filter tank or aquarium
11.) Circulation pump
12./13.) Power plug
1. Product description
The AB Aqua Medic Calcium reactor 400 consists of the following parts:
- reaction vessel (height: 37 cm, volume approx. 2.3 l),
- filling with AB Aqua Medic Hydrocarbonate, coarse grain.
The water inflow for connection to a 6/4mm air tube and the outflow for connection to a 8/6 mm
air tube, the circulation pump and injection port for CO are placed in the top of the filter.
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2. Theory
The equilibrium between calcium and carbonic acid in a seawater aquarium is destroyed due to the
biological activity of the animals. For the construction of their calcareous skeletons they take
calciumcarbonate out of the water. As a result, it comes to a lack of calcium and an increase of the
pH value.
The AB Aqua Medic Calcium reactor is a module for adjusting the natural equilibrium between
calcium and carbonic acid in the aquarium. It is filled with Hydrocarbonate, a highly purified
calciumcarbonate. Because this calciumcarbonate is not soluble at pH values common in seawater
tanks, it is necessary to blow carbonic acid into the reactor. This results in a local drop of the pH
value and simultaneously to the dissolving of calciumbicarbonate.
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