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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.

  • 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
  • Washable Filter Material PF17, 28" x 4 Yards Washable Filter Material PF17, 28" x 4 Yards

    AquaCave

    Washable Filter Material PF17, 28" x 4 Yards

    Washable Filter Material PF17, 28" x 4 Yards Initial thickness: 1" Filter Material: Medium Washable Filter Material PF17, 28" x 4 Yards Initial thickness: 1" Filter Material: Medium Product code: 5548Item No. PS-EM-PF17-4Y

    $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
  • IceCap Small CO2 Scrubber IceCap Small CO2 Scrubber IceCap Small CO2 Scrubber IceCap Small CO2 Scrubber IceCap Small CO2 Scrubber

    IceCap

    IceCap Small CO2 Scrubber

    IceCap Small CO2 Scrubber Raise pH in Your Reef Aquarium with an IceCap CO2 Scrubber The pH in a reef tank should be around 8.3 for optimal coral growth. If you’re struggling to maintain pH or if your aquarium suffers from chronically low pH,...

    $76.99
  • 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
  • Bubble Magus C100-2 Add-On Calcium Reactor Chamber Bubble Magus C100-2 Add-On Calcium Reactor Chamber

    Bubble Magus

    Bubble Magus C100-2 Add-On Calcium Reactor Chamber

    Bubble Magus C100-2 Add-On Calcium Reactor Chamber Model: C100-2 The second sets for C100-1 Capability: 400 L. - 800 L. (100 gl. - 250 gl.) Reactor room diameter: 4″ High: 16″  Bubble Magus C100-2 Add-On Calcium Reactor...

    Was: $89.95
    Now: $71.96
  • 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
  •   CoralVue GFO 128 FL OZ.

    CoralVue

    CoralVue GFO 128 FL OZ.

    Phosphate Adsorption Media for Fresh and Marine AquariumsGranular Ferric Oxide commonly refereed to as GFO ideally suited for filtering out phosphate from the water column which promotes better coral growth and helps prevent algae outbreaks. This medias...

    $69.95
  • 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
  • CDX Reactor Kit CDX Reactor Kit CDX Reactor Kit CDX Reactor Kit CDX Reactor Kit

    Two Little Fishes

    CDX Reactor Kit

    CDX Reactor Kit PhosBan Reactor 150 Two Little Fishies CDX 750 ml. - Carbon Dioxide Adsorption Media Two Little Fishies CDX Adapter for PhosBan Reactor CDX Reactor Kit The PhosBan Reactor 150 is designed with the upflow principle to achieve the...

    $68.95
  • 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...

    $65.99
  • 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...

    $64.99
  • 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
  • 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 -...

    $63.95
  •   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 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 Fishes

    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
  •  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
  • 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...

    $57.99
  • Two Little Fishes HydroCarbon, 4 Liter

    Two Little Fishes

    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
  •  PhosBan Reactor 150

    Two Little Fishes

    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...

    $52.73
  • 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 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...

    $50.99
  • PolypLab Genesis Rock PolypLab Genesis Rock

    PolypLab

    PolypLab Genesis Rock

    PolypLab Genesis Rock 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-2 Rocks Included in Set-Reduces...

    $49.99
  • Two Little Fishes  ReBorn Calcium Reactor Media 8.8 lbs. Two Little Fishes  ReBorn Calcium Reactor Media 8.8 lbs.

    Two Little Fishes

    Two Little Fishes ReBorn Calcium Reactor Media 8.8 lbs.

    ReBorn Calcium Reactor Media 8.8 lbs. (4 KG), Two Little Fishies ReBorn is composed of the fossil sheletal remains of reef building corals sustainably harvest from prostone sites in the Western Pacific Ocean. When used in a calcium reactor where it is...

    $49.99
  • ATB Bio-Pellets 1000 ml. ATB Bio-Pellets 1000 ml.

    AquaCave

    ATB Bio-Pellets 1000 ml.

    ATB Bio-Pellets 1000 ml. The ATB’s Bio Pellets are composed of biologically degradable polymers that are best to use with a media reactor. The pellets will allow aerobic growth of bacteria which consequently will consume nitrate and...

    $49.95
  • ROWAphos GFO Phosphate Removal Media, 1,000 ml. ROWAphos GFO Phosphate Removal Media, 1,000 ml.

    RowaPhos

    ROWAphos GFO Phosphate Removal Media, 1,000 ml.

    ROWAphos Phosphate Removal Media, 1,000 ml. ROWA®phos is a completely new filter material for eliminating phosphate, which was developed by the Weil Industrieanlagen GmbH company in Osnabrück, Germany. Due to its unique chemistry, it...

    $49.95
  • Chemi-Pure Boyd Elite 6.5oz Bulk 6 pack

    Boyd Enterprises

    Chemi-Pure Boyd Elite 6.5oz Bulk 6 pack

    Chemi-Pure Boyd Elite 6.5oz Bulk 6 pack Chemi-pure is still a very revolutionary product, and practically all aquarium filter mediums have been patterned after it! Over the years Boyd Enterprises has continually upgraded Chemi-pure with better...

    $48.37
  • 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...

    $45.99
  • BlueLife Clear FX PRO 450ml

    BlueLife

    BlueLife Clear FX PRO 450ml

    BlueLife Clear FX PRO 450ml CLEAR FX PRO is the most advanced all-in-one filtration media available on the market. Our cutting edge technology is compatible with both fresh and saltwater aquariums of all sizes. The easy to use media is the most...

    $45.50
  • BlueLife Clear FX REEF 450 ml

    BlueLife

    BlueLife Clear FX REEF 450 ml

    BlueLife Clear FX REEF 450 ml Clear Fx Reef is an advanced comprehensive filter media for Reef Aquariums which can be used to ensure the health, clarity, and stability of your reef aquarium. This specialized reef filtration media uses cutting edge...

    $45.50
  • Poly Bio Marine Poly Filter Pad 12" x 12" Poly Bio Marine Poly Filter Pad 12" x 12"

    Poly Bio Marine Inc.

    Poly Bio Marine Poly Filter Pad 12" x 12"

    Poly Bio Marine Poly Filter Pad 12" x 12"The POLY-FILTER is for filtering and purifying both fresh and salt water aquariums. It is a formulation of a special patented material bonded to a synthetic matrix. By means of a unique proprietary process, the...

    $44.99
  • PolypLab Pro-Carbon 4000 ml. PolypLab Pro-Carbon 4000 ml.

    PolypLab

    PolypLab Pro-Carbon 4000 ml.

    PolypLab Pro-Carbon 4000 ml. (approx. 4 lbs.) High-performance activated carbon for crystal clear water in fresh-water and salt-water aquariums. PolypLab Pro Carbon is is an ultra high performance activated carbon manufactured under the most strict...

    $42.99
  • Boyd's Grande Chemi-Pure 40 Oz. Boyd's Grande Chemi-Pure 40 Oz. Boyd's Grande Chemi-Pure 40 Oz.

    Boyd Enterprises

    Boyd's Grande Chemi-Pure 40 Oz.

    Boyd's Grande Chemi-Pure 40 Oz. By combining premium pelletized carbon with specialized ion-exchange resins and placing these inside of a fine-mesh nylon media bag, Chemi-Pure delivers a convenient and effective way to rapidly remove organic compounds...

    $41.11
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