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  1. Reef Octopus Add on Effluent Chamber Reef Octopus Add on Effluent Chamber

    Starting at: $94.99

    Reef Octopus Add on Effluent Chamber

    Add on effluent chamber and make any calcium reactor a more efficient dual-stage calcium reactor. Input and output are both 1/4in JohnGuest fittings. Available in three sizes.

  2. VarioS CR140 5.5 inch Calcium Reactor VarioS CR140 5.5 inch Calcium Reactor
    $409.99

    VarioS CR140 5.5 inch Calcium Reactor

    ApexReady

    Rated for Aquariums up to 200 Gallons

    Footprint: 12.2″ x 9.1″ | Body Diameter: 5.5″ | Height: 23″ 
    Recirculation Pump: Reef Octopus VarioS 2

  3. VarioS CR200 8 inch Calcium Reactor VarioS CR200 8 inch Calcium Reactor
    $499.99

    VarioS CR200 8 inch Calcium Reactor

    ApexReady

    Rated for Aquariums up to 500 Gallons

    Footprint: 15.2″ x 10.6″ | Body Diameter: 8″ | Height: 23″ 
    Recirculation Pump: Reef Octopus VarioS 4

  4. BioChurn 90ext HOB Reactor BioChurn 90ext HOB Reactor
    $249.99

    BioChurn 90ext HOB Reactor

    Rated up to: 100Gallons

    Holds: 400ml | Dim: 8.7″ x 4.53″ | Body Diameter: Ф4″ | Height: 16.15″ 
    Feed pump: Aquatrance AQ-800

  5. VarioS CR220 9 inch Calcium Reactor

    ApexReady

    Rated for Aquariums up to 600 Gallons

    Footprint: 16.5″ x 11″ | Body Diameter: 9″ | Height: 23″ 
    Recirculation Pump: Reef Octopus VarioS 6

  6. BioChurn 90INT Reactor with HOB Bracket BioChurn 90INT Reactor with HOB Bracket
    $179.99

    BioChurn 90INT Reactor with HOB Bracket

    Rated up to: 100Gallons

    Holds: 400ml | Dim: 8.66″ x 4.52″ | Body Diameter: Ф4″ | Height: 14.6″ 
    Feed pump: Aquatrance AQ-800

  7. SRO CR3000D 7in Dual Chamber Calcium Reactor
    $549.99

    SRO CR3000D 7in Dual Chamber Calcium Reactor

    Dual Chamber Reactor Rated for Aquariums up to 300-500 Gallons

    Footprint: 15.75″ x 11″ | Height: 23″ | Body Diameter: 2 x 7″ 
    Recirculation Pump: Reef Octopus Water Blaster 3000

  8. SRO CR5000D 8in Dual Chamber Calcium Reactor SRO CR5000D 8in Dual Chamber Calcium Reactor
    $655.99

    SRO CR5000D 8in Dual Chamber Calcium Reactor

    Dual Chamber Reactor Rated for Aquariums up to 1000 Gallons

    Footprint: 18″ x 15.5″ | Body Diameter: 2x 8″ | Height: 23″ 
    Recirculation Pump: Reef Octopus Water Blaster 5000

  9. BioChurn 120INT Biopellet Reactor BioChurn 120INT Biopellet Reactor
    $209.99

    BioChurn 120INT Biopellet Reactor

    Rated up to: 200Gallons

    Holds: 700ml | Dim: 9.8″ x 5.7″ | Body Diameter: Ф5″ | Height: 14.6″ 
    Feed pump: Aquatrance AQ-1000

  10. CR140D 5.5 inch Dual Chamber Calcium Reactor
    $409.99

    CR140D 5.5 inch Dual Chamber Calcium Reactor

    Rated for Aquariums up to 225 Gallons

    Footprint: 15.8″ x 9.5″ | Body Diameter: 5.5″ | Height: 22.8″ 
    Recirculation Pump: Aquatrance 2000

  11. CR100 4 inch Calcium Reactor
    $219.99

    CR100 4 inch Calcium Reactor

    Rated for Aquariums up to 150 Gallons

    Footprint: 9.5″ x 7.5″ | Body Diameter: 4″ | Height: 20″ 
    Recirculation Pump: Aquatrance 1200

  12. CR140 5.5 inch Calcium Reactor
    $294.99

    CR140 5.5 inch Calcium Reactor

    Rated for Aquariums up to 150 Gallons

    Footprint: 12″ x 11″ | Body Diameter: 5.5″ | Height: 24″ 
    Recirculation Pump: Aquatrance 2000

  13. BioChurn 120R Biopellet Recirculating Reactor
    $349.99

    BioChurn 120R Biopellet Recirculating Reactor

    Rated up to: 240Gallons

    Holds: 900ml | Dim: 11.82″ x 7.1″ | Body Diameter: Ф5″ | Height: 20 
    Feed pump: Aquatrance AQ-1200

  14. 350PRO Commercial Calcium Reactor 350PRO Commercial Calcium Reactor
    $4,199.99

    350PRO Commercial Calcium Reactor

    Large Calcium Reactor Ideal for Public Aquariums, Fish Farms and Aquaculture Centers up to 4000 Gallons

    Footprint: 24 x 11.5in | Body Diameter: Ф14in | Height: 52in 
    Recirculation Pump: Water Blaster 12500 | Wattage: 175w
    Media Capacity: 70L (18.5Gal)* | Required Feed Pump: gph

  15. 300PRO Commercial Calcium Reactor 300PRO Commercial Calcium Reactor
    $3,099.99

    300PRO Commercial Calcium Reactor

    Large Calcium Reactor Ideal for Public Aquariums, Fish Farms and Aquaculture Centers up to 2700 Gallons

    Footprint: 22.1 x 21.3in | Body Diameter: Ф12in | Height: 49.3in 
    Recirculation Pump: Water Blaster 10000 | Wattage: 125w
    Media Capacity: 45L (12Gal)* | Required Feed Pump: gph

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