Reef Octopus CR140 Calcium Reactor

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This item has been discontinued.

Reef Octopus

Quality, design and affordability define the Octopus Calcium Reactor series. Available in 3 different models that feature reverse flow water current for maximum water and CO2 contact time with the coral media. All models come with PH probe holders to monitor PH levels in the main reactor chamber and built in bubble counters to monitor CO2 drip rates. To help you meet the challenging task of maintaining alkalinity, calcium and trace elements , consider adding a Reef Octopus calcium reactor to your aquarium system.

How it works
A calcium reactor is essentially a chamber full of aragonite, which is the crushed skeleton of ancient hard corals. Aquarium water is pumped through this chamber along with pressurized carbon dioxide (CO2). The CO2 lowers the pH in the chamber to an acidic level which dissolves aragonite media into the aquarium water. In addition to dissolving the calcium, this process also dissolves nearly all the minerals and trace elements the coral used in order to grow.

Automated Calcium and Alkalinity supplementation - When set up properly and used correctly, a calcium reactor can maintain or increase calcium levels with little to no maintenance.

Rated for Aquariums up to 250 Gallons
Footprint: 12" x 11"
Body Diameter: 6"
Height: 24"
Recirculation Pump: OTP 2000

- Reverse flow and CO2 Recirculating Design
- Auto Fill Bubble Counter
- Probe Holder w/Plug*
- Easy to Remove Lid
- Precision Effluent Control Valve
- Solid Construction
- 1/4"quick connect fittings
- 1-year Manufacturer`s Pump Warranty
* Does not include PH probe.

Calcium/Alkalinity Demand
250 Gallon – Light Demand
200 Gallon – Medium Demand
150 Gallon – Heavy Demand

Technical Specs
- Body Size: 6"
- Footprint: 12" x 11"
- Total Height: 24"
- Inlet Size: 1/4"
- Max Feed Rate: 150GPH
Note: Suggest a feed pressure slightly higher than a full flowing influent

Recirculation Pump Information
OTP 2000
Wattage: 20w

Warranty - 1 year manufacturer`s warranty on pump and 1 year on reactor body



Experience Level: Intermediate


Good calcium reactor. Smallish footprint. I'm running it on a medium stocked SPC 110G tank and do not have to use 2-part. Setup was WAY easier than my old Korallin reactor. Please note also these no longer come with the OTP pumps they come with aquatrance pumps. Overall would buy again and would recommend. Other

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