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    Best Seller
    MR1 Media Reactor - Up to 500 gal.

    MR1 Media Reactor - Up to 500 gal.

    The Next Reef MR 1 Media Reactor is handmade in the USA from acrylic; resulting in one of the best built; best performing media reactors available. Over one half gallon capacity makes it ideal for your saltwater tank up to 250 gallons or your... more

    $69.99

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    Next Reef MR1 Replacement Sponges - 2 pk.

    Next Reef MR1 Replacement Sponges - 2 pk.

    Replacement Sponges for the Next Reef MR1 Media Reactors will keep the media inside of the reactor and prevent it from leaking out into the aquarium. For more information on aquarium care; please see our Article Archive . more

    $8.99

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    Best Seller
    MR1 Monster Media Reactor - Up to 1200 gal.

    MR1 Monster Media Reactor - Up to 1200 gal.

    The Next Reef MR 1 Monster Media Reactor is handmade in the USA from acrylic; resulting in one of the best built; best performing media reactors available. Huge 2 gallon capacity makes it ideal for your saltwater tank up to 600 gallons or your... more

    $179.99

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    ARM Reactor Media for Aquarium Treatment, 1-Gallon By CaribSea Aquatics

    ARM Reactor Media for Aquarium Treatment, 1-Gallon By CaribSea Aquatics

    "Please contact us if you have any question about this item. We will try our best to solve your problem. A high magnesium reactor media. Arm extra coarse is still a complete reactor media Containing not only calcium and carbonate, but essential trace... more

    $36.99

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    "DrTim's Aquatics Bashsea Pellet Master 3 Reactor Kit PM-3 Kit, for up to 300 gallons"

    "DrTim's Aquatics Bashsea Pellet Master 3 Reactor Kit PM-3 Kit, for up to 300 gallons"

    "Complete media reactor kit optimized for superior nitrate and phosphate removal. DrTim's Aquatics Bashsea Pellet Master 3 Reactor Kit allows for setup ease and great SAVINGS. Properly matched reactor kit components maximize efficient use of DrTim's... more

    $299.99

    FREE shipping

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    (275,000+)
    "DrTim's Aquatics Bashsea Pellet Master 2 Reactor Kit PM-2 Kit, for up to 150 gallons"

    "DrTim's Aquatics Bashsea Pellet Master 2 Reactor Kit PM-2 Kit, for up to 150 gallons"

    "Complete media reactor kit optimized for superior nitrate and phosphate removal. DrTim's Aquatics Bashsea Pellet Master 2 Reactor Kit allows for setup ease and great SAVINGS. Properly matched reactor kit components maximize efficient use of DrTim's... more

    $183.99

    FREE shipping

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    (275,000+)
    NextReef MR1 Complete Media Reactor Kit

    NextReef MR1 Complete Media Reactor Kit

    NextReef Reactors Loom Large Over the Competition! The MR1 family of Media / Substrate Reactors feature a massive 4-inch reaction chamber. The extra wide design maximizes water to media contact, increasing efficiency and minimizing dead zones in the... more

    $99.99

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    NextReef MR1 Media Reactor Replacement Sponge (2 pack)

    NextReef MR1 Media Reactor Replacement Sponge (2 pack)

    Replacement sponge for the NextReef MR1 Reactor (2 pack) more

    $5.99

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    NextReef MR1 XL Media Reactor

    NextReef MR1 XL Media Reactor

    NextReef Reactors Loom Large Over the Competition! The MR1 family of Media / Substrate Reactors feature a massive 4-inch reaction chamber. The extra wide design maximizes water to media contact, increasing efficiency and minimizing dead zones in the... more

    $109.99

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    Media Reactor With Pump (Mr-30 - 50-200 Gallons)

    Media Reactor With Pump (Mr-30 - 50-200 Gallons)

    Eliminates water channeling through filter media May be used with phosphate resins, phosphate or nitrate sponges, activated carbon & other resin media Recessed O-ring provides a complete seal Durable acrylic body Versatile design installs in sump or... more

    $54.97

    FREE shipping

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    A.R.M. Calcium Reactor Media Fine 1 gallon

    A.R.M. Calcium Reactor Media Fine 1 gallon

    A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. A.R.M. is processed for immediate use, no rinsing required, and has double the surface area of regular aragonite. Precision grading (2-3mm) allows... more

    $22.99

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    A.r.m. Reactor Media 1gal (8lbs)

    A.r.m. Reactor Media 1gal (8lbs)

    "# 00525 - 1 Gallon A. R. M. Aragonite Reactor Media from CaribSea A. R. M. Yourself Against Phosphate A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact A. R. M. has nearly 50 times the... more

    $22.52

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    Media Reactor With Pump 95Gph 10-75G (Mr-20 - 10-75 Gallons)

    Media Reactor With Pump 95Gph 10-75G (Mr-20 - 10-75 Gallons)

    Eliminates water channeling through filter media May be used with phosphate resins, phosphate or nitrate sponges, activated carbon & other resin media Recessed O-ring provides a complete seal Durable acrylic body Versatile design installs in sump or... more

    $33.97

    FREE shipping

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    Carib Sea A.R.M Aragonite Reactor Media

    Carib Sea A.R.M Aragonite Reactor Media

    Carib Sea A.R.M. Aragonite Reactor Media: A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact A.R.M. has nearly 50 times the strontium of other brands (7,390 ppm) A.R.M. is processed for... more

    $30.99 $23.24

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    CaribSea ARM Reactor Media 1gal (8lbs)

    CaribSea ARM Reactor Media 1gal (8lbs)

    ARM Fine is for most downflow reactors, fludized bed type reactors, and all uplflow reactors other than rapid upflow type. It is a complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact, ARM has... more

    $38.97

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    Carib Sea ARM Aragonite Reactor Coarse Media

    Carib Sea ARM Aragonite Reactor Coarse Media

    Carib Sea ARM Aragonite Reactor Coarse Media A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact A.R.M. has nearly 50 times the strontium of other brands (7,390 ppm) A.R.M. is processed for... more

    $39.99 $29.99

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    MR1 Complete Media Reactor - Up to 250 gal.

    MR1 Complete Media Reactor - Up to 250 gal.

    The Next Reef MR 1 Media Reactor is handmade in the USA from acrylic; resulting in one of the best built; best performing media reactors available. Over one half gallon capacity makes it ideal for your saltwater tank up to 250 gallons or your... more

    $89.00

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    MR1 XL Media Reactor - Up to 750 gal.

    MR1 XL Media Reactor - Up to 750 gal.

    The Next Reef MR 1 XL Media Reactor is handmade in the USA from acrylic; resulting in one of the best built; best performing media reactors available. Huge 1 gallon capacity makes it ideal for your saltwater tank up to 375 gallons or your freshwater... more

    $99.99

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    MR1 Shorty Media Reactor - Up to 200 gal.

    MR1 Shorty Media Reactor - Up to 200 gal.

    The Next Reef MR 1 Shorty Media Reactor is handmade in the USA from acrylic; resulting in one of the best built; best performing media reactors available. .75 gallon capacity makes it ideal for your saltwater tank up to 100 gallons or your freshwater... more

    $59.99

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    NextReef MR1 Media Reactor

    NextReef MR1 Media Reactor

    NextReef Reactors Loom Large Over the Competition! The MR1 family of Media / Substrate Reactors feature a massive 4-inch reaction chamber. The extra wide design maximizes water to media contact, increasing efficiency and minimizing dead zones in the... more

    $79.99

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    NextReef MR1 Media Reactor Replacement O-Ring

    NextReef MR1 Media Reactor Replacement O-Ring

    Replacement O-Ring for the NextReef MR1 Reactor more

    $4.99

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    NextReef MR1 Shorty Media Reactor

    NextReef MR1 Shorty Media Reactor

    NextReef Reactors Loom Large Over the Competition! The MR1 family of Media / Substrate Reactors feature a massive 4-inch reaction chamber. The extra wide design maximizes water to media contact, increasing efficiency and minimizing dead zones in the... more

    $69.99

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    NextReef SMR1 NP Biopellet Reactor

    NextReef SMR1 NP Biopellet Reactor

    NextReef SMR1 Solid Media Reactors Introducing the NextReef SMR1 Media Reactor A NextReef Original ... Developed in conjunction with the original US Distributor of NP BioPellets*, the NextReef SMR1 was the first media/substrate reactor specifically... more

    $114.99

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    NextReef SMR1XL NP Biopellet Reactor

    NextReef SMR1XL NP Biopellet Reactor

    NextReef SMR1 Solid Media Reactors Introducing the NextReef SMR1 Media Reactor A NextReef Original ... Developed in conjunction with the original US Distributor of NP BioPellets*, the NextReef SMR1 was the first media/substrate reactor specifically... more

    $149.99

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    CaribSea A.R.M Coarse Calcium Reactor Media 8 lb

    CaribSea A.R.M Coarse Calcium Reactor Media 8 lb

    A complete reactor media containing not only calcium and carbonate, but essential trace elements as well. In fact A.R.M. has nearly 50 times the strontium of other brands (7,390 ppm) A.R.M. is processed for immediate use, no rinsing required, and has... more

    $29.99

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