Calcium Reactors

Calcium Reactors for saltwater aquariums are by far the best way to control and ensure proper trace element concentrations. By dissolving dead coral skeletons, calcium reactors will release the trace elements in proper ratios for coral growth in a saltwater aquarium. Calcium reactors do require CO2 injection along with pH monitoring, but on a properly set up system, calcium reactors require very little maintenance, are reliable, and the media is much cheaper than 2-part additives.
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  1. VarioS CR140 5.5" DC Calcium Reactor - Reef Octopus
    Rating:
    100%
    Reef Octopus
    VarioS CR140 5.5" DC Calcium Reactor - Reef Octopus
    $529.99

    Earn 529 Reward Points

    $529.99
  2. VarioS CR200 8" DC Calcium Reactor - Reef Octopus
    Rating:
    80%
    Reef Octopus
    VarioS CR200 8" DC Calcium Reactor - Reef Octopus
    $599.99

    Earn 599 Reward Points

    $599.99
  3. VarioS CR220 9" DC Calcium Reactor - Reef Octopus
    Rating:
    93%
    Reef Octopus
    VarioS CR220 9" DC Calcium Reactor - Reef Octopus
    $709.99

    Earn 709 Reward Points

    $709.99
  4. Skimz Monzter CM122 External Calcium Reactor
    Rating:
    77%
    Skimz
    Skimz Monzter CM122 External Calcium Reactor
    $384.99

    Earn 384 Reward Points

    $384.99
  5. CR100 4" Calcium Reactor - Reef Octopus
    Rating:
    100%
    Reef Octopus
    CR100 4" Calcium Reactor - Reef Octopus
    $299.99

    Earn 299 Reward Points

    $299.99
  6. CR140 5.5" Calcium Reactor - Reef Octopus
    Rating:
    60%
    Reef Octopus
    CR140 5.5" Calcium Reactor - Reef Octopus
    $369.99

    Earn 369 Reward Points

    $369.99
  7. Super Reef Octopus CR3000D 8" Calcium Reactor
    Rating:
    100%
    Reef Octopus
    SRO CR3000D 7" Calcium Reactor - Reef Octopus
    $659.99

    Earn 659 Reward Points

    $659.99
  8. Super Reef Octopus CR5000D 8" Calcium Reactor
    Rating:
    100%
    Reef Octopus
    Super Reef Octopus CR5000D 8" Calcium Reactor - Reef Octopus
    $799.99

    Earn 799 Reward Points

    $799.99
  9. Monzter CM117 Internal Calcium Reactor - Skimz
    Skimz
    Monzter CM117 Internal Calcium Reactor - Skimz
    $318.99

    Earn 318 Reward Points

    $318.99
  10. Monzter CM157 Internal Calcium Reactor - Skimz
    Rating:
    40%
    Skimz
    Monzter CM157 Internal Calcium Reactor - Skimz
    $296.99

    Earn 296 Reward Points

    $296.99
  11. Skimz Monzter CM152 External Calcium Reactor
    Rating:
    80%
    Skimz
    Skimz Monzter CM152 External Calcium Reactor
    $516.99

    Earn 516 Reward Points

    $516.99
  12. Skimz Monzter CM202 External Calcium Reactor
    Skimz
    Skimz Monzter CM202 External Calcium Reactor
    $649.99

    Earn 649 Reward Points

    $649.99
  13. Skimz Monzter CM202H External Calcium Reactor
    Skimz
    Skimz Monzter CM202H External Calcium Reactor
    $899.99

    Earn 899 Reward Points

    $899.99
  14. CO2 Regulator and Solenoid Kit 7077.400 - Tunze
    Tunze
    CO2 Regulator and Solenoid Kit 7077.400 - Tunze
    $210.00

    Earn 210 Reward Points

    $210.00
  15. Co2 Regulator 7077/3 - Tunze
    Rating:
    40%
    Tunze
    CO2 Regulator 7077.3 - Tunze
    $111.43

    Earn 111 Reward Points

    $111.43
  16. Milwaukee MA955 CO2 Solenoid Valve
    Rating:
    100%
    Milwaukee Instruments
    Milwaukee MA955 CO2 Solenoid Valve
    $39.99

    Earn 195 Reward Points Earn 390 Reward Points

    $39.99
  17. CO2 Tank - 5 lbs.
    Rating:
    91%
    Bulk Reef Supply
    CO2 Tank - 5 lbs.
    $79.99

    Earn 395 Reward Points Earn 790 Reward Points

    $79.99
  18. CarbonDoser Precision Checkvalve - Aquarium Plant Life
    Rating:
    100%
    Aquarium Plant Life
    CarbonDoser Precision Checkvalve - Aquarium Plant Life
    $19.99 $19.99
  19. Aragonite Reactor Calcium Reactor Media - Korallen-Zucht
    Rating:
    80%
    Korallen-Zucht
    Aragonite Reactor Calcium Reactor Media - Korallen-Zucht

    Starting at: $7.59

    Earn 7 Reward Points

  20. CaRx Calcium Media - Triton
    Rating:
    80%
    Triton
    CaRx Calcium Media (22lbs) - Triton
    $69.00

    Earn 69 Reward Points

    $69.00
  21. Reef Reactor CaRx Media - Medium Grain - Seachem
    Seachem
    Reef Reactor CaRx Media - Medium Granule - Seachem

    Starting at: $19.25

    Earn 95 Reward Points Earn 190 Reward Points

  22. Reef Reactor CaRx Media - Large Grain - Seachem
    Seachem
    Reef Reactor CaRx Media - Large Granule - Seachem

    Starting at: $19.25

    Earn 95 Reward Points Earn 190 Reward Points

  23. 1 Gallon ARM Reactor Media - Extra Coarse - CaribSea
    Rating:
    89%
    CaribSea
    1 Gallon ARM Reactor Media - Extra Coarse - CaribSea
    $22.99

    Earn 110 Reward Points Earn 220 Reward Points

    $22.99
  24. 1 Gallon ARM Reactor Media - Coarse - CaribSea
    Rating:
    80%
    CaribSea
    1 Gallon ARM Reactor Media - Coarse - CaribSea
    $29.99

    Earn 145 Reward Points Earn 290 Reward Points

    $29.99
  25. ReBorn Calcium Reactor Media - Two Little Fishies
    Rating:
    93%
    Two Little Fishies
    ReBorn Calcium Reactor Media - Two Little Fishies

    Starting at: $35.66

    Earn 175 Reward Points Earn 350 Reward Points

  26. CoraLazarus - High-purity Calcium Media 5 kg - Brightwell Aquatics (Cal, Alk and Trace Elements)
    Brightwell Aquatics
    CoraLazarus - High-Purity Calcium Reactor Media 5 kg - Brightwell Aquatics
    $36.99

    Earn 180 Reward Points Earn 360 Reward Points

    $36.99
  27. NeoMag - High-purity Magnesium Media - Brightwell Aquatics (Cal, Alk and Trace Elements)
    Brightwell Aquatics
    NeoMag - High-purity Magnesium Media - Brightwell Aquatics

    Starting at: $14.99

    Earn 70 Reward Points Earn 140 Reward Points

  28. Korallen-Zucht ZEOmag Magnesium Granulate 1 kg
    Rating:
    100%
    Korallen-Zucht
    ZEOmag Magnesium Granulate (1 kg) - Korallen-Zucht
    $28.99

    Earn 28 Reward Points

    $28.99
  29. ReMag - Magnesium Media for Calcium Reactors - Two LIttle Fishies
    Rating:
    100%
    Two Little Fishies
    ReMag - Magnesium Media for Calcium Reactors - Two LIttle Fishies

    Starting at: $21.41

    Earn 105 Reward Points Earn 210 Reward Points

  30. Probe Holder
    Rating:
    100%
    Coralvue
    Inline Probe Holder - Compression Fitting
    $19.99

    Earn 95 Reward Points Earn 190 Reward Points

    $19.99
  31. CO2 Cylinder Adapter - Hydra Aquatics
    Rating:
    60%
    Hydra
    CO2 Cylinder Adapter - Hydra Aquatics
    $14.99

    Earn 70 Reward Points Earn 140 Reward Points

    $14.99
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