ATB Aquarium Technik BURIAN
Nové sady 988/2, 602 00 Brno

Calcium reactors and kalkstirrers

Ca Reactor Giga Size

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Catalogue number: 30005
EAN: 8594197900622
EAN (red): 8594197900639
Suitable for system volume up to:  
Low bio-load
20 000 l
High bio-load
10 000 l
Performance: 65 W
Dimensions: 500 x 350 x 1000
Weight: 13.50 kg
For tanks up to:
Warranty (months): 60
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Ca Reactor Giga Size

Introducing the brand new, third-generation ATB calcium reactors. This innovated range of our Ca reactors uses the Airstar Return Pumps, renowned for its robustness and durability in environments where abrasive substances such as sand or gravel are very common and can be released from the reaction vessel. Airstar pumps provide sufficient pressure that is essential for the optimum functioning of the calcium reactors. Newly, our reactors are equipped with a removable and maintainable filter screen and can be equipped with a foam filter at extra cost. The lid is designed to be easily removable when replacing the media and cleaning the reactor, and to ensure adequate sealing of the entire system. The reactor also includes a pH sond holder in the lid.


Thanks to the unique ATB design, the reactor creates a vacuum and draws water from the tank itself and then returns it to the tank after enrichment. Flow velocity can be easily controlled by continuous flow rate control of the reactor pump and integrated ball valve. This saves a significant amount of money that otherwise would have to be invested in the additional pump. Our reactors are made with high precision and tightness and are therefore also suitable for external use outside the filter sump.


  • Innovative design of the lid and reactor sieve for easy maintenance and ensuring watertightness
  • Venturi nozzle for sucking water from the filter into the reactor
  • Waterproof design for the possibility of placing the reactor outside the filter
  • Powerful and durable Airstar 8000 W pump
  • Input for pH probe in lid
  • Integrated bubble counter
  • Reaction media content 35 kg

We recommend

Medium for Calcium reactors Calcar 60. Particle size approx. 3 - 10 mm

ATB set and bottle for connection of the Ca reactor to CO2

Notes: Try to avoid dispensing high iodine content near the white PVC parts Never remove calcium water from the reactor directly to the pumps. Doing so may cause their damage, due to calcium deposition.

WATCH OUT for replicas of the original and patented ATB design.


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