Marine aquariums with soft corals, stone 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 the water enriched with carbon dioxide through the hardness granulate. The carbon dioxide reacts with water to produce carbonic acid and dissolves the calcium carbonate. The hardened water leaves the reactor through a control valve.
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 60 mm (2.3 in.). 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: 1,200 ml (42.2 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 provide 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 valve.
- Can be used as a “stand-alone” solution.
- Silent operation.
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 similar to Comline filter holder.

Comline Calcium Automat
(3170.000)

For aquariums from 200 to 1,000 l
(50 to 265 USgal.) of salt water.
Energy consumption: 8 W.
Voltage / frequency: 230V/50Hz (115V/60Hz).
Cable length: 2 m (78.7 in.).
Immersion depth: approx. 60 to 280 mm (2.3 to 11.0 in.).
Filling volume: 1,200 ml (40.5 fl.oz.).
Delivery: up to 1.9 l/h (0.5 US gal./h).
Dimensions: L 113 x W 113 x H 300 mm (L 4.4 x W 4.4 x H 11.8 in.).
Magnet holder up to a glass thickness of 12 mm (.47 in.).

1: Deutsch, English, Francais (x3170.8888) 2: Italiano, Espanol, РУССКИЙ (x3170.8882)

3170.000	271,70 EUR
Including VAT: (21,00 %)

With SILENCE pump

(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 US gal./h).

(7) Water outlet through precision cock.

(8) Screw cap, easy to open.

Calcium Automat Extension
(3170.500)

The Automatic Calcium Dispenser 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.
- It increases the efficiency by about 20 per cent.
- It neutralises the carbon dioxide at the outlet of the reactor.
- It increases the granulate volume.
- It permits a higher throughput of water.

For aquariums from 200 to 1,000 l (50 to 265 USgal.) of seawater.
Immersion depth: approx. 60 to 280 mm (2.3 to 11.0 in.).
Filling volume: approx. 2,500 ml (.66 USgal.).
Dimensions: L 113 x W 135 x H 300 mm (L 4.4 x W 5.3 x H 11.8 in.).
Magnet holder up to a glass thickness of 12 mm (.47 in.).

1: Deutsch, English, Francais (x3170.8888) 2: Italiano, Espanol, РУССКИЙ (x3170.8882)

3170.500	111,90 EUR
Including VAT: (21,00 %)

Accessories (order separately)

pH/CO2 controller set
(7074/2)

Consisting of pH controller 7070/2 and CO2 valve set 7074.11 with power supply unit 5012.01. The 12 Volt valve is nickel-plated and protected against corrosion.
The adjustable time-interval meter permits the controlled distribution of CO2, preventing an overdose.
The control station operates on safety extra-low voltage.

1: Deutsch, English, Francais (x7074.2888) 2: Italiano, Espanol, РУССКИЙ (x7074.2882)

7074/2	390,60 EUR
Including VAT: (21,00 %)

Pressure reducer
(7077/3)

Precision device with fine adjustment for standard CO2 cylinders, thread in keeping with German standard DIN 477 (US version with CGA 320 thread). To be mounted without tools; precise adjustment; two pressure gauges; pressure-relief valve; made in Germany.

1: Deutsch, English, Francais (x7077.3888)

7077/3	90,50 EUR
Including VAT: (21,00 %)

CO2 cylinder - 1.5 kg (3.3 lbs.)
(7079.150)

Supplied with base, carrying handle and filled with CO2 (without fill in case of air transport).
The pressure cylinder has been manufactured according to European standard p0685, and the cylinder valve has been provided with an M21.8 x 1/4" thread in keeping with German standard DIN 477.

7079.150	138,40 EUR
Including VAT: (21,00 %)

CO2 cylinder - 2.0 kg (4.4 lbs.)
(7079.200)

Supplied with base, carrying handle and filled with CO2 (without fill in case of air transport).
The pressure cylinder has been manufactured according to European standard p0685, and the cylinder valve has been provided with an M21.8 x 1/4 in. thread in keeping with German standard DIN 477.

7079.200	144,10 EUR
Including VAT: (21,00 %)

CO2 non-return valve.
(7070.010)

7070.010	11,90 EUR
Including VAT: (21,00 %)

Reef Excel® Lab carbonate test
(7014/2)

Carbonate hardness Titration Test (TH) for fresh and sea water, approx. 100 tests.

7014/2	57,60 EUR
Including VAT: (21,00 %)

Reef Excel® Lab calcium test
(7015/2)

Colorimetric determination of calcium for fresh and sea water, approx. 200 tests.

7015/2	76,60 EUR
Including VAT: (21,00 %)

Calcium carbonate is a hardness granulate of more than 99% CaCO3 (calcium); grain size approx. 4 to 6mm (.15 to .23 in.); for pH value buffering (increase in carbonate hardness) and to increase the calcium content (Ca2+).

Calcium carbonate
(0880.901)

700ml (23.6 oz.) box.

0880.901	3,90 EUR
Including VAT: (21,00 %)

Calcium carbonate
(0880.900)

10 x 700ml (23.6 oz.) packet.

0880.900	37,20 EUR
Including VAT: (21,00 %)

Calcium carbonate
(0880.950)

5L (1.3 USgal.) bucket.

0880.950	22,40 EUR
Including VAT: (21,00 %)