The calcium provides the necessary elements and molecules for the growth of reef-building organisms such as corals and their allies. Corals and other reef-building organisms require sufficient and stable available calcium and alkalinity if they are to flourish, but you have to calculate for daily dosage, and it’s kind of annoying. ​
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Let the T-Series Do Calculate for You​
JNS cTech T-Series 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 JNS cTech T-Series 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 JNS cTech T-Series Calcium Reactor is truly one-of-a-kind.

FEATURESNEW! Inlet filter 
helps to trap particulates, prolongs the lifetime of the pump. 

NEW! The high-quality pinch valve
allows for precise flow control. 

NEW! CO2 recovery system 
re-injects excess/unused CO2. This helps lower CO2 usage and minimizes excess CO2 from going back into your aquarium.

NEW! ​Accurate CO2 bubble counter

NEW! ​Built-in 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.

T-NANO only ! Hang-on-back design
Space-saving, easy-installation

Thumbscrews and keyhole flanges 
allow for easy removal of the lid.

Up-Flow Design
provides maximum contact time between water and media and prevents clumping​

High-Quality Polished Acrylic Constructions
Durable and beautiful
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Simple to Operate
Easy to set up and disassemble to clean