Reef Octopus CR100 4" Calcium Reactor

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Reef Octopus CR100 4" Calcium Reactor

SKU: 207882
In Stock: 5
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Quick Overview

Maintain the calcium and alkalinity in your reef tank with CR100 Calcium Reactor from Reef Octopus.

  • Rated for aquariums up to 150 gallons

  • Reverse flow and CO2 recirculating design

  • Aquatrance 1200 Pump

  • pH probe holder included (probe sold separately)

  • More

    Full Details

    A calcium reactor is used to maintain a balanced amount of calcium and alkalinity in your reef tank. In order to use a calcium reactor, you will need a CO2 regulator, CO2 tank, pH probe/controller, small feed pump (flow rate should be set 1-2 liters per hour) and calcium reactor media.


    Filtration Handling

    Well Stocked Tank - Rated up to 90 gallons

    Medium Stocked Tank - Rated up to 125 gallons

    Light Stocked Tank - Rated up to 150 gallons



    • Reverse flow design
    • Control the reactor with CO2 needle valve and the effluent valve
    • Auto fill bubble counter
    • pH probe holder
    • Easy to remove lid
    • Precision effluent control valve
    • Solid construction
    • 1/4" quick connect fittings


    Reactor Specifications:

    • Body Size: 4”
    • Foot Print: 9.5” x 7.5”
    • Total Height: 20”
    • Media Capacity: 1.7L
    • Inlet Size: 1/4"
    • Max Feed Rate: 150 GPH
    • Suggested feed rate is slightly higher than a full flowing influent


    Aquatrance 1200 Pump Features:

    • Quiet operation
    • Power Consumption: 15 Watts


    Manufacturer's Warranty

    • 1 year on pump
    • 1 year on reactor body



    Ask a question

    Product Questions

    Is this unit internal or external and why isn't t indicated in the description ?
    Question by: Troy Dean on May 15, 2016 2:43:00 PM
    Great question!
    The design of all calcium reactors will be internal or external however you need. They are all sealed off containers and can be in the sump or run externally as needed.
    Answer by: Connor (Admin) on May 17, 2016 8:46:00 PM