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At AquaCave, we offer some of the best selection and best prices on Aquarium Filter Media, Carbon, Biological, GFO, Biopellets, and media reactors, Algae Scrubbers, and Cheato Reactors, for marine, reef, and freshwater aquariums.

  • IceCap 50P Small Controllable DC Media Reactor IceCap 50P Small Controllable DC Media Reactor IceCap 50P Small Controllable DC Media Reactor IceCap 50P Small Controllable DC Media Reactor IceCap 50P Small Controllable DC Media Reactor

    IceCap

    IceCap 50P Small Controllable DC Media Reactor

    IceCap 50P Small Controllable DC Media Reactor IceCap User-Friendly DC Media Reactor  The IceCap Controllable 12v DC Media Reactor is the ideal device for utilizing your favorite filtration media in confined spaces typically found in All-In-One...

    $94.50
  • Bubble Magus C120-2 Add-On Calcium Reactor Chamber Bubble Magus C120-2 Add-On Calcium Reactor Chamber

    Bubble Magus

    Bubble Magus C120-2 Add-On Calcium Reactor Chamber

    Bubble Magus C120-2 Add-On Calcium Reactor Chamber Model: C120-2 The second sets for C120-1 Capability: 800 L -1600 L (200 gl. - 450 gl.) Reactor room diameter: 5“ High: 18″ Bubble Magus C120-2 Add-On Calcium Reactor Chamber Model:...

    Was: $109.95
    Now: $87.96
  • Innovative Marine MiniMax Pro Desktop Media Reactor Innovative Marine MiniMax Pro Desktop Media Reactor Innovative Marine MiniMax Pro Desktop Media Reactor Innovative Marine MiniMax Pro Desktop Media Reactor

    Innovative Marine

    Innovative Marine MiniMax Pro Desktop Media Reactor

    Innovative Marine MiniMax Pro Desktop Media Reactor FEATURES: Bracket Dimensions: 3.5" x 2.5" x 1.38" All-In-One Design - for use with Bio Pellets, GFO, & Carbon Made from quality cell cast acrylic - Bracket Included Smallest Form Factor Responsive...

    $80.00
  • Bubble Magus Mini 80 Media Reactor Bubble Magus Mini 80 Media Reactor Bubble Magus Mini 80 Media Reactor Bubble Magus Mini 80 Media Reactor

    Bubble Magus

    Bubble Magus Mini 80 Media Reactor

    Bubble Magus Mini 80 Media Reactor Pump : WP600  Power  : 220V/110V ,8.5W Internal volume : 500ML Two version for use ,with sponge or without sponge  Bubble Magus Mini 80 Media Reactor Pump : WP600  Power  :...

    Was: $99.99
    Now: $79.99
  • Brightwell Aquatics Carbonit-P, 2.2 kg. / 4.4 lbs

    Brightwell Aquatics

    Brightwell Aquatics Carbonit-P, 2.2 kg. / 4.4 lbs

    Brightwell Aquatics Carbonit-P, 2.2 kg. / 4.4 lbs * Premium quality activated carbon, offering desirable physical and chemical characteristics for application in all marine and freshwater aquaria, featuring high capacity for the removal of latent...

    $79.95
  •  Boyds Chemi-Pure Elite Bulk, 6 pack 11.74 oz.   Boyds Chemi-Pure Elite Bulk, 6 pack 11.74 oz.

    Boyd Enterprises

    Boyds Chemi-Pure Elite Bulk, 6 pack 11.74 oz.

    Boyds ChemiPure Elite, Bulk 6 pack 11.74 oz. The Boyd Chemipure Elite has the filtration capability of the Boyd Chemipure but it's loaded with ferric oxide to help quickly get rid of phosphates and silicates. Boyd Chemipure Elite is an easy-to-use...

    $79.75
  • Nyos TORQ G2 0.75 Reactor Chamber Nyos TORQ G2 0.75 Reactor Chamber Nyos TORQ G2 0.75 Reactor Chamber

    NYOS

    Nyos TORQ G2 0.75 Reactor Chamber

    Nyos TORQ G2 0.75 Reactor Chamber The Nyos® TORQ® is an innovative high-performance system reactor in a modular design for all types of filter media, such as active carbon, phosphate remover (GFO), zeolite and bio pellets. Key-Features...

    $79.00
  •  PhosBan Reactor 150

    Two Little Fishies

    PhosBan Reactor 150

    The PhosBan Reactor 150 is designed with the upflow principle to achieve the most efficient use of PhosBan or other chemical filter media...Phos Ban Media Reactor 150 by Two Little Fishes. **** PRODUCT MANUAL **** The PhosBan Reactor 150 is designed...

    $76.99
  • Seachem PhosGuard, 4 Liters Seachem PhosGuard, 4 Liters

    Seachem

    Seachem PhosGuard, 4 Liters

    Seachem PhosGuard 4 Liters. PhosGuard is a high capacity and high efficiency filtration product for removing phosphates and silicates from marine or fresh water aquaria. Unlike competing products, PhosGuard is bead-shaped for optimum flow...

    $76.48
  • Brightwell Aquatics NeoMag, 5.4 kg. / 11.9 lbs.

    Brightwell Aquatics

    Brightwell Aquatics NeoMag, 5.4 kg. / 11.9 lbs.

    Brightwell Aquatics NeoMag, 5.4 kg. / 11.9 lbs. * High-purity, magnesium-rich mineral DOLOMITE that may be employed in traditional calcium reactors, or even blended in to pre-existing aquarium substratum, to gradually increase and maintain the magnesium...

    $74.95
  • DrTim's Aquatics NP-Active Pearls 900ml DrTim's Aquatics NP-Active Pearls 900ml DrTim's Aquatics NP-Active Pearls 900ml DrTim's Aquatics NP-Active Pearls 900ml DrTim's Aquatics NP-Active Pearls 900ml

    Dr. Tim's Aquatics

    DrTim's Aquatics NP-Active Pearls 900ml

    DrTim's Aquatics NP-Active Pearls 900ml A novel, innovative way, using PURE biodegradable bio-polymers, to control nitrate and phosphate in your aquarium. Specially developed for aquariums Works in ALL aquariums Safe for ALL fish and corals PURE -...

    $74.19
  • Reef Endurance GFO 2.5lbs Phosphate Adsorption Media Reef Endurance GFO 2.5lbs Phosphate Adsorption Media Reef Endurance GFO 2.5lbs Phosphate Adsorption Media

    Reef Endurance

    Reef Endurance GFO 2.5lbs Phosphate Adsorption Media

    Reef Endurance GFO 2.5lbs Phosphate Adsorption Media Phosphate Adsorption Media for Fresh and Marine Aquariums Granular Ferric Oxide, often referred to as GFO, is perfectly suited for filtering out phosphate from the water column. This helps promote...

    $69.99
  • Sweetwater® SWX Bio-Media BF150A-One Cubic Foot Sweetwater® SWX Bio-Media BF150A-One Cubic Foot Sweetwater® SWX Bio-Media BF150A-One Cubic Foot

    Sweetwater

    Sweetwater® SWX Bio-Media BF150A-One Cubic Foot

    Sweetwater® SWX Bio-Media BF150A  Successful biofiltration using moving bed technology requires the use of the right media. Pentair's Sweetwater SWX Bio-Media is the ideal choice at a great price. These biofilm carrier elements are made from...

    $69.99
  • Tropic Marin NP-Bacto-Pellets, 1000 ml. Tropic Marin NP-Bacto-Pellets, 1000 ml.

    Tropic Marin

    Tropic Marin NP-Bacto-Pellets, 1000 ml.

    Tropic Marin NP-Bacto-Pellets, 1000 ml. An easy to use, biodegradable filter media for the effective removal of nitrates and phosphates For the most natural environment in the reef aquarium it is important to pay close attention to the mineral and...

    $69.95
  • Boyds Chemi-Pure Blue Grande 44 oz Boyds Chemi-Pure Blue Grande 44 oz Boyds Chemi-Pure Blue Grande 44 oz

    Boyd Enterprises

    Boyds Chemi-Pure Blue Grande 44 oz

    Boyds Chemi-Pure Blue Grande 44 oz Chemi-pure Blue is specially created for fantastic results in reef and marine aquariums. Our NEW proprietary blend of premium, low-dust pelleted carbon and high capacity ion-exchange resins are skillfully combined to...

    $69.34
  • Seachem Purigen Filter Media, 1,000 ml. Seachem Purigen Filter Media, 1,000 ml.

    Seachem

    Seachem Purigen Filter Media, 1,000 ml.

    Seachem Purigen Filter Media, 1,000 ml.Purigen™ is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and...

    $64.31
  • Bubble Magus Internal Hang On Reactor MF70-INT Bubble Magus Internal Hang On Reactor MF70-INT Bubble Magus Internal Hang On Reactor MF70-INT Bubble Magus Internal Hang On Reactor MF70-INT Bubble Magus Internal Hang On Reactor MF70-INT

    Bubble Magus

    Bubble Magus Internal Hang On Reactor MF70-INT

    Bubble Magus Internal Hang On Reactor MF70-INT MF-70 INT Footprint: 5.91" x 4.53" ( Include Bracket ) Width: 3.75″ Overall Height: 15.36" Pump: WP60 120w/60hz 12w 600L/H Media Loading Capacity: up to 500ml Inlet / Outlet: 5/8″ 90...

    Was: $79.99
    Now: $63.99
  • Bubble Magus Mini 70 Media Reactor Bubble Magus Mini 70 Media Reactor Bubble Magus Mini 70 Media Reactor Bubble Magus Mini 70 Media Reactor

    Bubble Magus

    Bubble Magus Mini 70 Media Reactor

    Bubble Magus Mini 70 Media Reactor Pump : WP600  Power  : 220V/110V ,8.5W Internal volume : 250ML Two version for use ,with sponge or without sponge Footprint: 4"x4"x16.75"  

    Was: $79.99
    Now: $63.99
  •   Chemi-Pure ELITE 46.96 oz. by Boyd Enterprises

    Boyd Enterprises

    Chemi-Pure ELITE 46.96 oz. by Boyd Enterprises

    Chemi Pure ELITE 46.96 oz. by Boyd Enterprises. The Boyd Chemipure Elite has the filtration capability of the Boyd Chemipure but it's loaded with ferric oxide to help quickly get rid of phosphates and silicates. Boyd Chemipure Elite is an...

    $63.44
  • Marine Pure VAULT Marine Pure VAULT

    Marinepure

    Marine Pure VAULT

    Marine Pure VAULT Secure container to keep your MarinePure Biofilter Media safe and helps keep sump organized and easier to keep clean. Easy to assemble and it can also be used as a protein skimmer. Stackable, you can stack them together for larger...

    $59.99
  • PolypLab Genesis Rock - 4 Pack

    PolypLab

    PolypLab Genesis Rock - 4 Pack

    PolypLab Genesis Rock - 4 Pack Increase the overall filtration power of your tank by adding Genesis Rock to your system. - Designed For Fresh or Saltwater Aquariums- 23,000+ Additional Square Feet of Bacterial Space For Each Rock- 4 Rocks Included in...

    $59.99
  • PolypLab Genesis Rock Booster PolypLab Genesis Rock Booster PolypLab Genesis Rock Booster

    PolypLab

    PolypLab Genesis Rock Booster

    PolypLab Genesis Rock Booster crease the overall filtration power of your tank by adding these two Genesis Rocks and using our bacterial supplement Polyplab Genesis. - Includes (2) Genesis Rocks, (1) Bottle Genesis Bacteria- 23,000+ Additional Square...

    $59.99
  • Coconut Shell Granulated Activated Carbon, 7 lbs.

    AquaCave

    Coconut Shell Granulated Activated Carbon, 7 lbs.

    Coconut Shell Granulated Activated Carbon, 7 lbs. Coconut shell-activated carbon offers a high surface area and an extensive micro-porous structure which makes it an exceptional absorbent of molecules that are more difficult to remove. Furthermore,...

    $59.95
  • Seachem Matrix Carbon Filter Media, 2,000 ml. Seachem Matrix Carbon Filter Media, 2,000 ml.

    Seachem

    Seachem Matrix Carbon Filter Media, 2,000 ml.

    MatrixCarbon is a truly unique activated carbon. It is formed as a spherical bead for optimum hydrodynamics, and will not pack. It permits maximum water flow and contact with its high density of macroporous binding sites..Seachem Matrix Carbon Filter...

    $59.95
  • PhosBan GFO Media, 1 lbs. (454 gr.)  PhosBan GFO Media, 1 lbs. (454 gr.)

    Two Little Fishies

    PhosBan GFO Media, 1 lbs. (454 gr.)

    PhosBan Media by Two Little Fishes, 454 gr.This granular ferric oxide hydroxide adsorbs phosphates from saltwater and freshwater. Also adsorbs silicates and dissolved organics. Does not leach adsorbed substances. Long lasting and easy way to control...

    $59.23
  • Reef Endurance ROX 0.8 Carbon 1 gallon Reef Endurance ROX 0.8 Carbon 1 gallon Reef Endurance ROX 0.8 Carbon 1 gallon

    Reef Endurance

    Reef Endurance ROX 0.8 Carbon 1 gallon

    Reef Endurance ROX 0.8 Carbon 1 gallon Our Premium Activated Carbon Reef Endurance now offers ROX 0.8 Pharmaceutical Grade Activated Carbon, the finest activated carbon available. These tiny dense extruded pellets produce superior absorption for quicker...

    $58.99
  • CO2 Scrubber Skimmer Lid 12" (C2C-300) CO2 Scrubber Skimmer Lid 12" (C2C-300) CO2 Scrubber Skimmer Lid 12" (C2C-300) CO2 Scrubber Skimmer Lid 12" (C2C-300)

    Reef Octopus

    CO2 Scrubber Skimmer Lid 12" (C2C-300)

    CO2 Scrubber Skimmer Lid 12" (C2C-300) A Perfect Lid for a Perfect Fit This special lid is designed to precisely fit a range of Reef Octopus protein skimmers with the intent to use it in conjunction with a CO2 Scrubber (RO-C2T-90) to draw out the...

    $58.89
  •  Seachem PhosNet 500 gr.  Seachem PhosNet 500 gr.

    Seachem

    Seachem PhosNet 500 gr.

    Seachem PhosNet 500 gr. PhosNet™ is a granular ferric oxide (GFO) with high porosity, high surface area and high binding capacity. It will rapidly remove phosphates and silicates from both freshwater and saltwater and will not release them back into...

    $57.99
  • Two Little Fishes HydroCarbon, 4 Liter

    Two Little Fishies

    Two Little Fishes HydroCarbon, 4 Liter

    MatrixCarbon is a truly unique activated carbon. It is formed as a spherical bead for optimum hydrodynamics, and will not pack. It permits maximum water flow and contact with its high density of macroporous binding sites..Two Little Fishes HydroCarbon, 4...

    $56.94
  •   PURA GFO Phos-Lock Filter Media, 2.5 lbs. (1,135 gr.)

    Magnavore

    PURA GFO Phos-Lock Filter Media, 2.5 lbs. (1,135 gr.)

    PhosLock is the benchmark German made ferric hydroxide media for total phosphate removal in all aquaria. Used all over the world, it is the product of choice for many critical water purity applications.PURA Phos-Lock Filter Media, 1,135 gr.  ****...

    $55.95
  • CO2 Scrubber Skimmer Lid 10" (C2C-250) CO2 Scrubber Skimmer Lid 10" (C2C-250) CO2 Scrubber Skimmer Lid 10" (C2C-250) CO2 Scrubber Skimmer Lid 10" (C2C-250)

    Reef Octopus

    CO2 Scrubber Skimmer Lid 10" (C2C-250)

    CO2 Scrubber Skimmer Lid 10" (C2C-250) A Perfect Lid for a Perfect Fit This special lid is designed to precisely fit a range of Reef Octopus protein skimmers with the intent to use it in conjunction with a CO2 Scrubber (RO-C2T-90) to draw out the...

    $53.12
  • Boyds Chemi-Pure 10 oz. Bulk 6 Pack Boyds Chemi-Pure 10 oz. Bulk 6 Pack

    Boyd Enterprises

    Boyds Chemi-Pure 10 oz. Bulk 6 Pack

    Boyds Chemi-Pure 10 oz. Bulk 6 Pack Boyd Chemipure is an easy-to-use filter media which contains activated carbons and ion exchange resins that remove waste and nitrogen build-up in your tank. Dissolved organic food waste, animal waste and other...

    $50.99
  • CO2 Scrubber Skimmer Lid 9" (C2C-220) CO2 Scrubber Skimmer Lid 9" (C2C-220) CO2 Scrubber Skimmer Lid 9" (C2C-220)

    Reef Octopus

    CO2 Scrubber Skimmer Lid 9" (C2C-220)

    CO2 Scrubber Skimmer Lid 9" (C2C-220) Compatible with Reef Octopus Elite 220 Protein Skimmers.  A Perfect Lid for a Perfect Fit This special lid is designed to precisely fit a range of Reef Octopus protein skimmers with the intent to use it in...

    $50.81
  • Red Sea REEF SPEC Carbon 2,000 ml. (1,000 gr.) Red Sea REEF SPEC Carbon 2,000 ml. (1,000 gr.)

    Red Sea

    Red Sea REEF SPEC Carbon 2,000 ml. (1,000 gr.)

    Red Sea REEF SPEC Carbon 2,000 ml. (1,000 gr.) REEF-SPEC Carbon has all the proper technical and physical characteristics making it a perfect carbon for marine and reef aquariums. The carbon will absorb and rapidly remove organic pollutants through its...

    $49.99