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cTech T-2

Calcium Reactor

AquaMaxx cTech T-2 Calcium Reactors use an up-flow design to mix saltwater, calcium carbonate and CO2 inside a reaction chamber to eliminate the need for daily two-part dosing. Not only will the AquaMaxx cTech T-2 Calcium Reactor keep your levels balanced, you will no longer have to calculate daily dosages for your tank. With a seamless body, removable lid for quick media access and a small, space-saving design, the AquaMaxx cTech T-2 Calcium Reactor is truly one-of-a-kind.
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Computer-Precision Engineered

AquaMaxx cTech T-2 Calcium Reactors are computer-precision engineered and utilize the latest aquarium technology to deliver unparalleled performance and value. Despite its small form factor and compact footprint, the T-2 is rated for aquariums up to 500 gallons.

An effective and convenient inlet filter helps to trap particulates, extends the life of the pump and makes tuning the effluent drip rate as easy as possible. The high-quality pinch value allows for precise effluent control. Simplified inlet and outlet designs also improve efficiency. The unique pump baffle enclosure helps to minimize noise.

With a built-in a pH probe holder, you can easily keep an eye on the pH inside the calcium reactor with a pH monitor or control the CO2 with a pH controller. A CO2 recovery system re-injects excess/unused CO2. This helps lower CO2 usage and minimizes excess CO2 from going back into your aquarium.


AquaMaxx Calcium Reactors were designed from the ground up with the aquarium hobbyist in mind. The computer precision-cut enclosure makes the reactor look and feel seamless.

Cleaning and maintenance is simple. Thumbscrews and keyhole flanges allows for easy removal of the lid.

Technical Specifications

  • Capacity: Up to 500 gallons

  • Pump: SICCE Syncra 1.5

  • Over Height: 20.5"

  • Reaction Tube Diameter: 6"

  • Chamber Capacity: 5.5 L

  • Footprint: 10.3" x 11.1"


  • High quality cell-cast acrylic construction

  • Inlet prefilter to prevent clogging

  • Precise pinch valve

  • Pump baffle enclosure to minimize noise

  • Simple to set up and operate

  • Up-flow design prevents clogging and improves water circulation

  • Thumbscrews for easy removal of lid ‚ easy to clean and replace media!

  • Reactor can be place inside your sump or externally

  • Includes PH probe port for optional monitoring

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