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Tunze Comline Calcium Automat Reactor

Marine aquariums with soft corals, stony corals, snails or calcareous algae need regular additives of calcium and bicarbonate ions. In 1989, TUNZE Aquarientechnik was the first manufacturer to build a CO2 controlled calcium reactor. A pump is used to pass water enriched with carbon dioxide through the hardness granulate. The carbon dioxide reacts with water to produce carbon dioxide gas and dissolves the calcium carbonate. The hardened water leaves the reactor through a control cock.

Today’s generation of automatic calcium reactors combine high efficiency and a compact size, consisting of a reactor with pump and the Comline housing. Calcium Automat 3170 needs no additional supply pump, and is operational with a minimum water level of 60mm (2.3"). It is suitable for operation in the aquarium as well as in a cabinet filter.

The set-up:
  • Transparent reactor housing with pump and water distribution in one unit.
  • Granulate content: 1,100 ml (37.1 fl. Oz.)
  • Comline housing for attachment and light protection for direct operation in the aquarium.
  • Dissolution of the Co2 in the pump housing and recirculation of the undissolved gases permit an especially economical CO2 consumption.
  • Easy refill of the granulate by a screw cover.
  • Adjustment of the drip rate by means of a precise control cock.
  • Can be used as a “stand-alone" solution.
  • Silent operation.
Tunze Comline Calcium Automat Reactor
For complete operational safety, we recommend the use of a CO2 controller 7074/2 fitted with a pH meter and CO2 valve. In this case the pH meter will control the infeed of CO2 in accordance with the setpoint value entered. The danger of excessively low pH values during the night is averted.

Delivery condition: Ready for mounting with hardness granulate, bubble counter, pump and holding device. * CO2 equipment sold separately.

Specifications:
  • Dimensions: 4.9"L x 4.4"W x 11.8"H
  • Immersion Depth: Approximately 2.3" to 11"
  • Filling Volume: 1,100 ml (38.7 fl. Oz.)
  • Capacity: 200 to 1,000 liters (52 to 264 gal.)
  • Power Consumption: 10W
Tunze Comline Calcium Automat Reactor Diagram
  1. CO2 Inlet
  2. Comline housing as a tank with protection against light
  3. Resuspension of the undissolved gases
  4. Transparent reactor with high water flow rate; easy to clean
  5. Water induction
  6. Pump 800 l/h (211.3 g/h)
  7. Water outlet through precision cock
  8. Screw cap, easy to open
Reef Aquarium
Calcium Automat Extension

The Calcium Automat 3170 can be supplemented with a second reaction stage. A Comline housing is fitted with an additional granulate chamber. They can be placed next to each other and can be connected with a hose.
  • Increases efficiency by about 20 percent
  • Neutralizes the carbon dioxide at the outlet of the reactor
  • Increases the granulate volume
  • Permits a higher throughput of water
Water Output 0.5 CO2 Bubble/s 1 CO2 Bubble/s 2 CO2 Bubble/s
  KH Output 3170 KH Output 3170.50 KH Output 3170 KH Output 3170.50 KH Output 3170 KH Output 3170.50
1 drops=8ml/min 24 26 34 42 42 54
2 drops=16ml/min 22 26 26 36 38 52
3 drops=24ml/min 20 24 24 36 34 50
4 drops=32ml/min 18 22 22 34 30 46
Item #DescriptionPrice 
TZ3511Tunze Calcium Automat Reactor - 3170.000$305.41
TZ3531Tunze Calcium Automat Extension - 3170.500$87.87
TZ3551Tunze Hardness Granules - Automat Reactor Media - 0880.901$3.81
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