Pax Bellum

ARID C36 Calcium Reactor Feed & Injection Assembly

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$48.00 $120.00

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The Calcium Reactor Feed & Injection Assembly is a compact manifold that threads directly into the water inlet on the base of the ARID N24 and inline with tubing on the N18, allowing the ARID reactors to be used downstream from a Calcium Reactor (CaRx). By utilizing the ARID reactor inline with your calcium reactor, you gain a synergistic benefit. The ARID reactor removes excess CO2 from the effluent, mitigating the pH-lowering effects of the CaRx on your reef tank, and the macroalgae benefits from a constant CO2 source. This optional kit can increase the growth rate of your macroalgae and with it the nutrient uptake rate and dissolved oxygen production.


The assembly can be easily installed or removed at any time. This optional kit sends water directly to a calcium reactor, or peristaltic pump supplying the calcium reactor, and receives the CO2-laden effluent from the Ca reactor. This is accomplished by separating the high and low pressure ports by a user preset valve. The effluent coming from the CaRx passes through the included drip counter, and then enters the low pressure side of the calcium injection assembly where it mixes with the bulk of the water entering the ARID, making contact with the macro-algae where it is stripped of excess CO2 and PO4 before entering the reef system. 



  • Compatible A.R.I.D. models: C36
  • CaRx Supply Port: 1/8” FNPT ,
  • CaRx Effluent Port: 1/8” MNPT x 1/4" push-fitting
  • System Water Supply Port: 1" MNPT x 1" FNPT


What's Included?

  • Injection manifold
  • Drip counter
  • 4x Restriction Discs.

Note: Omit disc when using with a peristaltic pump.

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