Reef Octopus CR140 5.5" Calcium Reactor

Click on image to zoom
View full size image

More Views

Reef Octopus CR140 5.5" Calcium Reactor

33% Recommend this to a friend (1 of 3)

SKU: 204100
In Stock: 4
Please wait...
Ships tomorrow

365 Day Returns

What's This?

Preferred Reefers
Earn Up To 5% Back

Quick Overview

Maintain the calcium and alkalinity in your reef tank with CR140 Calcium Reactor from Reef Octopus.

  • Rated for aquariums up to 200 gallons

  • Reverse flow and CO2 recirculating design

  • Aquatrance 2000 Pump

  • Bubble counter

  • pH probe holder included (probe sold separately)

  • More

    Full Details

    Reef Octopus Calcium Reactor Manual


    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 100 gallons

    Medium Stocked Tank - Rated up to 150 gallons

    Light Stocked Tank - Rated up to 200 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: 5.5”
    • Foot Print: 12” x 11”
    • Total Height: 24”
    • Media Capacity: 3.8L
    • Inlet Size: 1/4"
    • Max Feed Rate: 150 GPH
    • Suggested feed rate is slightly higher than a full flowing influent


    Aquatrance 2000 Pump Features:

    • Quiet operation
    • Power Consumption: 45 Watts


    Manufacturer's Warranty

    • 2 year on pump
    • 1 year on reactor body


    3 Items

    • Failed after 4 months By Scott on 7/6/2013

      The pump failed after 4 months.
    • It's ok By Vu on 1/31/2012

      The reactor itself is ok but the circulating pump is very loud
    • Awesome Reactor By Ericm on 11/29/2010

      I was looking for a reactor for my new frag setup and i bought this after doing alot of homework. Geo's were out of my price range and this one was a great price so i bought it. i was very surprised how well built this was. i thought it would be cheap thin acrylic for the cylinder and a crappy pump. boy was i wrong. i hooked it up and controlled it via my RKE and loaded up with media and after a month i seen dramatic difference to my frags. the growth and color was very noticeable. no more over dosing 2 part for me anymore. best investment i bought.


    Ask a question

    Product Questions

    No questions yet. Be the first to ask the question!