Reef Octopus 4″ Single Calcium Reactor

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About This Product

Item #: OCT-CR100

  • Reef Octopus 4 Calcium Reactor
  • Dimensions: 9.5 x 7.5 x 20
  • Powered by the OTP1000 pump
  • High quality machine welded cast acrylic construction
  • 1 year warranty on pump. 1 year warranty on reactor.


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. Below is a diagram showing easy setup.