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Chemical Filtration: Reactors
We also carry all the Two Little Fishies Phosban Reactor and KW Reactor replacements parts.

Visit the Filtration Overview Page for recommended equipment for reef, saltwater fish only and freshwater tanks, and for some basic aquarium filtration theory.
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Two Little Fishies PhosBan Reactor 150 two little fishes phosphate reactor 150
Two Little Fishies PhosBan Reactor 150
Our Price: $40.99
Sale Price: $29.99
You save $11.00!
In Stock

The Two Little Fishies PhosBan Reactor 150 is designed with the upflow principle to achieve the most efficient use of PhosBan or other chemical filter media. By pushing water from the bottom upward through a dispersion plate, it forces an even distribution of water through the media, and prevents channeling. It can be mounted hanging on the back of the aquarium or below the aquarium.
  • PhosBan Reactor 150 user manual (pdf file in new window)
  • For aquariums up to 150 gallons
  • Hose barb connections are for 1/2 inch i.d. tubing
  • Includes 1/2 inch barbed ball valve for flow control, and hose clamps
  • Recommended flow rate is 20 to 30 gallons per hour (pump is not included)
  • Use with a maximum of 200 grams PhosBan (or media height of 5 inches (13 cm.) or use with NPX Bioplastics. If you're using the NPX Bioplastics we recommend you also purchase the Phosban Reactor NPX Screen
  • If you're hanging your Reactor off the back of your tank, we recommend using the Extension Kit
Two Little Fishies PhosBan Reactor 550 two little fishes phosphate reactor 550
Two Little Fishies PhosBan Reactor 550
Our Price: $65.79
In Stock

The Two Little Fishies PhosBan Reactor 550 is designed with the upflow principle to achieve the most efficient use of PhosBan or other chemical filter media. By pushing water from the bottom upward through a dispersion plate, it forces an even distribution of water through the media, and prevents channeling. It can be mounted hanging on the back of the aquarium or below the aquarium.
  • For aquariums up to 600 gallons
  • Hose barb connections are for 1/2 inch i.d. tubing
  • Includes 1/2 inch barbed ball valve for flow control, and hose clamps
  • Recommended flow rate is 20 to 40 gallons per hour (pump is not included)
  • Use with a maximum of 750 grams PhosBan (or media height of ca. 8 inches (20 cm) or use with NPX Bioplastics. If you're using the NPX Bioplastics we recommend you also purchase the Phosban Reactor NPX Screen
CPR Aquatic Mini Tumbler Media Reactor
CPR Aquatic Mini Tumbler Media Reactor
Our Price: $50.00
In Stock

The CPR Aquatic Mini Tumbler Media Reactor makes adding chemical filtration media to saltwater and freshwater aquariums easy and more effective than currently used methods. Using an upflow design helps ensure the most efficient use of chemical filtration media. The Mini Tumbler will make it easier to keep your tank clean and healthy.

The Mini Tumbler is designed to be used with coarse media, such as the Two Little Fishies NPX Bioplastics. If you want to use a finer media such as GFO, Purigen or ion-based media please purchase the CPR Aquatic Fine Media Kit for Mini Tumbler Media Reactor.

Includes:
  • Mini Reactor body (7.5" X 4.5" X 3.25", measurement does not include the pump)
  • 2 media screens & cap
  • Sliding lid
  • Circulation pump
  • Suction cups
  • Can be installed inside an aquarium or sump
CPR Aquatic Nano Tumbler Media Reactor
CPR Aquatic Nano Tumbler Media Reactor
Our Price: $45.00
In Stock

The CPR Aquatic Nano Tumbler Media Reactor makes adding chemical filtration media to saltwater and freshwater aquariums easy and more effective than currently used methods. Using an upflow design helps ensure the most efficient use of chemical filtration media. The Nano Tumbler will make it easier to keep your tank clean and healthy.

The Nano Tumbler is designed to be used with coarse media, such as the Two Little Fishies NPX Bioplastics. If you want to use a finer media such as GFO, Purigen or ion-based media please purchase the CPR Aquatic Fine Media Kit for Nano Tumbler Media Reactor.

Includes:
  • Mini Reactor body (8.25" height X 3.45" width X 3.3"). The pump will add 2.5" to the height & .75" to the width.
  • 2 media screens & cap
  • Sliding lid
  • Circulation pump
  • Suction cups
  • Designed for installation in the back compartment of a nano tank
Media Chamber 6-12
Bashsea Media Chamber 6-12
Our Price: $109.99
In Stock

The Bashsea Media Chamber 6-12 extra large design allows for high media volumes, while producing an even flow to maximize water-media contact time.

  • 13" Tall. Chamber: 11-1/2" X 6".
  • For tanks up to 240 gallons
  • Does not come with a pump. The recommended flow rate for the submersible pump is 200 to 400 gph.
  • For use with all media types
  • Full access reaction chamber
  • Water distribution plate eliminates channeling of media
  • Precision water jet cut sponges
  • Precision CNC key hole flanges
  • True O-Ring Seals
  • 1/2" hose barb connections
  • Designed and hand built in the U.S.A. using 100% American made acrylic construction
AquaTop MultiMedia Reactor MR-20 w/ Pump
AquaTop MultiMedia Reactor MR-20 w/ Pump
List Price: $59.99
Our Price: $49.99
You save $10.00!
(Out of Stock)

The AquaTop MultiMedia Reactor MR-20 w/ Pump maximizes the efficiency of filter media with a reverse water flow design that eliminates water channeling through the filter media. Installed in a sump or hung on the tank, this versatile reactor can be used for phosphate resins, phosphate sponges, activated carbon, nitrate sponges, and other resin filter media. The high quality acrylic design makes this one of the most reliable media reactors available, and the MR-20 includes a pump and all the necessary plumbing.

  • Appropriate for 10-75 gallon aquariums
  • Dimensions: 2.4" diameter / 15" height
  • Up-flow filtration maximizes filter media efficiency
  • Includes variable flow water pump and sediment discharge filter
  • Intake and output tubing included
  • Easy to remove lid with recessed o-ring
  • Ready to use with a pump and all the necessary plumbing
  • Media NOT included
AquaTop MultiMedia Reactor MR-30 w/ Pump
AquaTop MultiMedia Reactor MR-30 w/ Pump
List Price: $99.99
Our Price: $79.99
You save $20.00!
(Out of Stock)

The AquaTop MultiMedia Reactor MR-30 w/ Pump maximizes the efficiency of filter media with a reverse water flow design that eliminates water channeling through the filter media. Installed in a sump or hung on the tank, this versatile reactor can be used for phosphate resins, phosphate sponges, activated carbon, nitrate sponges, and other resin filter media. The high quality acrylic design makes this one of the most reliable media reactors available, and the MR-20 includes a pump and all the necessary plumbing.
  • Appropriate for 50-200 gallon aquariums
  • Dimensions: 5.5" diameter / 23.5" height
  • Up-flow filtration maximizes filter media efficiency
  • Includes variable flow water pump and sediment discharge filter
  • Intake and output tubing included
  • Easy to remove lid with recessed o-ring
  • Ready to use with a pump and all the necessary plumbing
  • Media NOT included
ViaAqua Poly-Reactor Multi-Media Reactor
ViaAqua Poly-Reactor Multi-Media Reactor
Our Price: $41.50
(Out of Stock)

The ViaAqua Poly Reactor is built with high quality acrylic and an easy to remove lid with a recessed o-ring. The reverse water flow eliminates water channeling through the filter media thus efficiently utilizing filtering media. The Poly Reactor comes ready to use with a pump and all necessary plumbing parts. It's designed to be installed either in-sump or hanging on the tank. This versatile filter can be used for a number of different applications: phosphate, resins, phosphate sponge, activated carbon, nitrate sponge and other resin filtering medias.
  • 15" X 5"
  • Includes reaction chamber, down tube, intake tubing, sediment discharge filter, two barbed fittings, two lock nuts, lid, o-ring, two media strainers, two media sponges, hanger, a suction cup bracket, control valve, pump and tubing