Live Help Chat

Aquarium additives and supplements are necessary for the survival of the animals in a saltwater or freshwater tank. Aquarium supplements make it possible for an aquarist to keep aquarium water parameters within the correct ranges, thereby increasing health and vigor.
Many of these additives are important for the well being of you aquarium inhabitants. Some of the basics for reef tanks include Calcium and Alkalinity, magnesium and Iodine. Many additives and supplements may be used to establish water parameters conducive to the husbandry of freshwater fishes, plants, and invertebrates in aquarium filled with purified water, to replenish depleted elemental concentrations in aquarium that rarely receive a water change, and to re-establish beneficial mineral concentrations in aquarium following large water changes.

At AquaCave, we offer some of the best selection and best prices on aquarium additives and supplements for you marine, reef and freshwater aquarium.

60 of 103 Items
  • Reef Delete V1.02 Reef Delete V1.02

    Seneye

    Reef Delete V1.02

    Reef Delete ITC Reefculture V1.02 New Version The perfect reef aquarium is free of pests. Nothing to sting, eat or smother your beautiful corals! However, every reef aquarist knows that this isn’t always the case!   Reef Delete  is like having...

    $399.99
  • API General Cure Bulk Powder 850 gr. API General Cure Bulk Powder 850 gr.

    API

    API General Cure Bulk Powder 850 gr.

    API General Cure Bulk Powder 850 gr. API® General Cure powder treats a wide variety of parasitic diseases including velvet, fish lice, hole-in-the-head disease (Hexamita spp. & Spironucleus), gill & skin flukes (Dactylogyrus & Gyrodactylus )...

    $179.99
  • ESV Bionic Calcium Buffer System Concentrate, 2 x 4 gal.

    E.S.V.

    ESV Bionic Calcium Buffer System Concentrate, 2 x 4 gal.

    ESV Bionic Calcium Buffer System Concentrate, 2 x 4 gal. B-Ionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement system. When using equal volumes of each component, the aquarist can easily maintain calcium and...

    Was: $139.99
    Now: $118.99
  • Copper Power, Marine 1 Gal. Copper Power, Marine 1 Gal.

    Copper Power

    Copper Power, Marine 1 Gal.

    Copper Power, Marine 1 Gal. Copper Power Marine is one of the safest and most effective copper medications available for the elimination of external parasites. Used at 2.5 PPM Copper - nearly 5-Times the normal toxic level of copper in salt water.Copper...

    $109.99
  • Two Little Fishes AcroPower, 1 Gal.

    Two Little Fishies

    Two Little Fishes AcroPower, 1 Gal.

    Two Little Fishes AcroPower, 1 Gal. Use AcroPower from Two Little Fishies to provide amino acids to your corals to help build their skeletal structure. Amino acids can easily deplete in reef aquarium systems through protein skimmers and ultra low...

    $75.49
  • Tropic Marin All-for-Reef Power Mix 1,600gr. Tropic Marin All-for-Reef Power Mix 1,600gr.

    Tropic Marin

    Tropic Marin All-for-Reef Power Mix 1,600gr.

    Tropic Marin All-for-Reef Power Mix 1,600gr. Tropic Marin All-For-Reef revolutionized aquarium additive dosing with their original pre-mixed solution, and now this same formula is available in an ultra-concentrated crystalline form that you can easily...

    $75.04
  • 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
  • Brightwell Aquatics Restor,  2 Liters

    Brightwell Aquatics

    Brightwell Aquatics Restor, 2 Liters

    * Encourages health, growth, reproduction, and vibrant coloration. * Provides important nutrients to corals and their allies during periods of stress induced by changes in lighting and/or prolonged exposure to excessive water temperature (often resulting...

    $64.95
  • MIRACLE MUD, Marine 10 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD, Marine 10 lb. by EcoSystem Aquarium

    MIRACLE MUD, Marine 10 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful aquarium...

    $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
  • Red Sea Aiptasia X, 500 ml. Refill Red Sea Aiptasia X, 500 ml. Refill Red Sea Aiptasia X, 500 ml. Refill

    Red Sea

    Red Sea Aiptasia X, 500 ml. Refill

    Red Sea Aiptasia X, 500 ml. Refill In an exciting development for reef-keepers Red Sea has developed a unique patent pending formula to treat the pest anemones Aiptasia sp., Anemonia majano and Boloceroides sp. Affecting almost every reef aquarium,...

    $59.99
  • MIRACLE MUD 2, FRESHWATER 10 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD 2, FRESHWATER 10 lb. by EcoSystem Aquarium

    MIRACLE MUD 2, FRESHWATER 10 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful...

    $59.95
  • Triton N-DOC Organics Test Kit

    Triton

    Triton N-DOC Organics Test Kit

    Triton N-DOC Organics Test Kit Application:  Deliver insights into complex organic systems in seawater: Carbon and Nitrogen Use N/C/P ratio to manage sources of Carbon / Amino acid and control their influence on bacteria and corals in reef...

    $59.00
  • C-Balance by Two Little Fishes, 2 x 1 gal.

    Two Little Fishies

    C-Balance by Two Little Fishes, 2 x 1 gal.

    C-Balance by Two Little Fishes, 2 x 1 gal.This two-part calcium and alkalinity maintenance system adjusts calcium, magnesium, and strontium ions to Natural Seawater ratios, and achieves a balanced ionic residual. Makes replenishment of calcium and...

    Was: $56.55
    Now: $54.99
  • Tropic Marin ABC Liquid Balling Set A+B+C, 3 x 1000 ml. Tropic Marin ABC Liquid Balling Set A+B+C, 3 x 1000 ml.

    Tropic Marin

    Tropic Marin ABC Liquid Balling Set A+B+C, 3 x 1000 ml.

    Tropic Marin ABC Liquid Balling Set A+B+C, 3 x 1000 ml. The 3 components used in "The Balling Method" of supplementation Allows independent dosage of calcium (Part A) and carbonates (Part B) Sodium chloride free sea salt (Part C) maintains critical...

    $49.92
  • Red Sea Reef Energy AB+ Plus Coral Nutrition, 1000 ml Red Sea Reef Energy AB+ Plus Coral Nutrition, 1000 ml

    Red Sea

    Red Sea Reef Energy AB+ Plus Coral Nutrition, 1000 ml

    Red Sea Reef Energy AB+ Plus Coral Nutrition, 1000 ml An all-in-one superfood that will have your corals thanking you, delivering better growth, higher resilience, brighter colors, greater ease of use with automatic dosers, and minimal over skimming...

    $44.99
  • Triton Sulphate Supplement, 1000ml Triton Sulphate Supplement, 1000ml

    Triton

    Triton Sulphate Supplement, 1000ml

    Triton Sulphate Supplement, 1000ml The Triton System is based on accurate ICP-OES Testing that tells you exactly how much of any element may be in your aquarium allowing you to keep a healthy, sustainable reef ecosystem. Triton's testing and dosing...

    $42.00
  • PolypLab Medic 30 ml. PolypLab Medic 30 ml.

    PolypLab

    PolypLab Medic 30 ml.

    Polyp Lab Medic 30 ml. Medic is a highly effective water conditioner used to control external fish parasites present in both marine and freshwater environments. It contains a reef-safe oxidizing agent and is particularly effective against:Marine Ich -...

    $39.99
  • MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium

    EcoSystem Aquarium

    MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium

    MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful aquarium...

    $39.95
  • Tropic Marin PRO-CORAL A- ELEMENTS, 1,000 ml.

    Tropic Marin

    Tropic Marin PRO-CORAL A- ELEMENTS, 1,000 ml.

    Tropic Marin PRO-CORAL A- ELEMENTS, 1,000ml. In the ocean, there are tiny amounts of essential trace elements such as iodine, lithium, manganese, etc. that can be depleted rapidly in household aquariums as corals and invertebrates grow. Tropic Marin...

    $38.42
  • ESV Bionic Calcium Buffer System, 2 x 1 gal ESV Bionic Calcium Buffer System, 2 x 1 gal

    E.S.V.

    ESV Bionic Calcium Buffer System Concentrate, 2 x 1 gal.

    ESV Bionic Calcium Buffer System Concentrate, 2 x 1 gal.  B-Ionic Calcium Buffer is the original, unique, easy-to-use, two-component liquid supplement system. When using equal volumes of each component, the aquarist can easily maintain calcium and...

    Was: $44.95
    Now: $38.21
  •  Vibrant 16 oz. - Freshwater Formula    Vibrant 16 oz. - Freshwater Formula

    Underwater Creations

    Vibrant 16 oz. - Freshwater Formula

     Vibrant 16 oz. - Freshwater Formula     16 oz. Vibrant Liquid Aquarium Cleaner for Freshwater Aquariums - For Live Planted and Decorative Freshwater AquariumsVibrant is a new revolutionary liquid aquarium cleaner. You can say...

    $37.99
  • Vibrant 16 oz. - Reef Formula Vibrant 16 oz. - Reef Formula

    Underwater Creations

    Vibrant 16 oz. - Reef Formula

    Vibrant 16 oz. - Reef Formula  Vibrant is a new revolutionary liquid aquarium cleaner. You can say goodbye to algae, cloudy water and that grungy, dirty aquarium and say hello to that sparkling, crystal clear, algae free, vibrant aquarium you have...

    $37.99
  • Vibrant 16 oz. - Saltwater Fish Only Formula Vibrant 16 oz. - Saltwater Fish Only Formula Vibrant 16 oz. - Saltwater Fish Only Formula

    Underwater Creations

    Vibrant 16 oz. - Saltwater Fish Only Formula

    Vibrant 8 oz. - Saltwater Fish Only Formula 16 oz. Vibrant Liquid Aquarium Cleaner for Saltwater Aquariums - For Fish Only Saltwater AquariumsVibrant is a new revolutionary liquid aquarium cleaner. You can say goodbye to algae, cloudy water and...

    $37.99
  • Brightwell Aquatics MicroBacter Dry Rock Bacteria Starter Kit Brightwell Aquatics MicroBacter Dry Rock Bacteria Starter Kit

    Brightwell Aquatics

    Brightwell Aquatics MicroBacter Dry Rock Bacteria Starter Kit

    Brightwell Aquatics MicroBacter Dry Rock Bacteria Starter Kit This kit is designed to be used with unseeded dry rock such as Marco Rock or artificial live rock replacements. Plain dry sand is recommended instead of so called 'live sand' which may have...

    Was: $41.95
    Now: $35.66
  • Two Little Fishes AcroPower, 1,000 ml.

    Two Little Fishies

    Two Little Fishes AcroPower, 1,000 ml.

    Two Little Fishes AcroPower, 1000 ml. Use AcroPower from Two Little Fishies to provide amino acids to your corals to help build their skeletal structure. Amino acids can easily deplete in reef aquarium systems through protein skimmers and ultra low...

    $34.98
  • Red Sea Reef Foundation B Dry (Alk) - 1kg Red Sea Reef Foundation B Dry (Alk) - 1kg

    Red Sea

    Red Sea Reef Foundation B Dry (Alk) - 1kg

    Red Sea Reef Foundation B Dry (Alk) - 1kg Calcium, Magnesium, Strontium, and Carbonate are the basic foundation elements or coral skeletons. All of these elements need to be available in balanced proportions for coral health and growth. Reef...

    $33.99
  • ESV Bionic Magnesium, 1 gal. ESV Bionic Magnesium, 1 gal.

    E.S.V.

    ESV Bionic Magnesium, 1 gal.

    ESV Bionic Magnesium, 1 gal. When used with calcium and alkalinity supplements, magnesium plays an important role in stablilizing pH in your reef tank. B-Ionic Magnesium is an easy to use liquid magnesium supplement which  will not disrupt the...

    Was: $39.95
    Now: $33.96
  • Red Sea Reef Foundation Liquid Starter Kit, 3 x 250 ml.

    Red Sea

    Red Sea Reef Foundation Liquid Starter Kit, 3 x 250 ml.

    Red Sea Reef Foundation Liquid Starter Kit, 3 x 250 ml.A, B, C Reef Foundation C (Mg): A blend of Magnesium salts. Concentration: 1ml will raise the Mg level of 100 liters (25gal) by 1ppm.Reef Foundation® ACalcium and strontium complex for balanced...

    $32.99
  •  Boyd's Chemi-Clean 6 Gr.

    Boyd Enterprises

    Boyd's Chemi-Clean 6 Gr.

    Boyd's ChemiClean 6 Gr. Chemiclean cleans stains from red, black, blue-green, and methane (bubble) producing cyanobacteria in marine aquariums.It is completely safe for all fish, corals, invertebrates, and nitrifying bacteria in reef systems. It’s...

    $32.24
  • Triton Iodine Supplement, 100ml Triton Iodine Supplement, 100ml

    Triton

    Triton Iodine Supplement, 100ml

    Triton Iodine Supplement, 100ml The Triton System is based on accurate ICP-OES Testing that tells you exactly how much of any element may be in your aquarium allowing you to keep a healthy, sustainable reef ecosystem. Triton's testing and dosing...

    $32.00
  • Brightwell Aquatics AngeLixir Food Soak, 125 ml./ 4 oz. Brightwell Aquatics AngeLixir Food Soak, 125 ml./ 4 oz.

    Brightwell Aquatics

    Brightwell Aquatics AngeLixir Food Soak, 125 ml./ 4 oz.

    Free-Form Amino Acid Food Soak for Spongivorous Marine Fishes Overview * Complex of free-form amino acids in the same ratios found within tissues of sponges. * Utilizes natural attractants and marine-derived proteins to improve feeding response and...

    $31.95
  • Red Sea Reef Foundations A (Ca/SR) 1 LITER

    Red Sea

    Red Sea Reef Foundations A (Ca/SR) 1 LITER

    Red Sea Reef Foundations A (Ca/SR) 1 LITER Calcium and strontium complex for balanced formation of the coral skeletonCa | Sr Calcium, magnesium, strontium and carbonate are the basic foundation elements of coral skeletons.All of these elements need to...

    $30.99
  •  Seachem Reef Advantage Calcium, 1,000 gr.  Seachem Reef Advantage Calcium, 1,000 gr.

    Seachem

    Seachem Reef Advantage Calcium, 1,000 gr.

     Seachem Reef Advantage Calcium, 1,000 gr. Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are...

    $29.95
  • Tropic Marin NP Bacto Balance 500 ml. Tropic Marin NP Bacto Balance 500 ml.

    Tropic Marin

    Tropic Marin NP Bacto Balance 500 ml.

    Tropic Marin NP Bacto Balance 500 ml. Mixture of selected organic compounds to promote the incorporation of nitrate and phosphate in supplementary biomass. The ratio of nutrients is ideal for corals, sponges and other invertebrate animals found in reef...

    $28.03
  • Vibrant 8 oz. - Reef Formula Vibrant 8 oz. - Reef Formula Vibrant 8 oz. - Reef Formula

    Underwater Creations

    Vibrant 8 oz. - Reef Formula

    Vibrant 8 oz. - Reef Formula  Vibrant is a new revolutionary liquid aquarium cleaner. You can say goodbye to algae, cloudy water and that grungy, dirty aquarium and say hello to that sparkling, crystal clear, algae free, vibrant aquarium you have...

    $27.99
  • Vibrant 8 oz. - Saltwater Fish Only Formula Vibrant 8 oz. - Saltwater Fish Only Formula Vibrant 8 oz. - Saltwater Fish Only Formula

    Underwater Creations

    Vibrant 8 oz. - Saltwater Fish Only Formula

    Vibrant 8 oz. - Saltwater Fish Only Formula 8 oz. Vibrant Liquid Aquarium Cleaner for Saltwater Aquariums - For Fish Only Saltwater AquariumsVibrant is a new revolutionary liquid aquarium cleaner. You can say goodbye to algae, cloudy water and that...

    $27.99
  • PolypLab Poly-Booster 100 ml.

    PolypLab

    PolypLab Poly-Booster 100 ml.

    PolypLab Poly-Booster 100 ml. Contains 18 Amino-acids (60% of dry weight)Contains 12 Fatty acids (20% of dry weight)Contains  as much as 120ppm of Astaxanthan pigment, from natural sources.Can trigger a feeding response in most aquarium inhabitants...

    $26.99
  • PolypLab Reef Genesis 50 ml. PolypLab Reef Genesis 50 ml.

    PolypLab

    PolypLab Reef Genesis 50 ml.

    PolypLab Reef Genesis 50 ml. Working with a Canadian biotechnology firm, we have manufactured a custom blend of bacterial strains with concentrations of over 80 billion cells/mL. In their planktonic state, these bacteria serve as a highly nutritious...

    $26.99
  • Brightwell Aquatics KoraLagoon Substrate, 1.4 kg. / 3.1 lb.

    Brightwell Aquatics

    Brightwell Aquatics KoraLagoon Substrate, 1.4 kg. / 3.1 lb.

    Brightwell Aquatics KoraLagoonSubstrat Aragonite RefugiumSubstrateA blend of high-purity aragonite particulate grades to simulate the natural substrate particle profile of tropical reef lagoonsBrightwell Aquatics KoraLagoon Substrate, 1.4 kg. / 3.1 lb. A...

    $26.95
  • Red Sea NO3:PO4-X Nitrate & Phosphate reducer, 500 ml

    Red Sea

    Red Sea NO3:PO4-X Nitrate & Phosphate reducer, 500 ml.

    Red Sea NO3:PO4-X Nitrate & Phosphate reducer, 500 ml. NO3:PO4-X Contains a unique complex of carbons that are used by nutrient reducing bacteria. Each carbon is utilized by different strains of microorganisms while maintaining the specific Carbon:...

    $24.99
  • Reef Solution, 16oz. by Ecosystem Aquarium Reef Solution, 16oz. by Ecosystem Aquarium

    EcoSystem Aquarium

    Reef Solution, 16oz. by Ecosystem Aquarium

    Reef Solution™ is the ideal all natural, multipurpose additive created for enhancing the marine aquarium environment. Outstanding results for both reef and fish only aquariums. In reef systems, polyp extensions on corals is phenomenal. In fish only...

    $24.95
  • ESV Bionic Calcium Buffer System, 2 x 32 oz. ESV Bionic Calcium Buffer System, 2 x 32 oz.

    E.S.V.

    ESV Bionic Calcium Buffer System, 2 x 32 oz.

    ESV Bionic Calcium Buffer System, 2 x 32 oz. B-Ionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement system. When using equal volumes of each component, the aquarist can easily maintain calcium and alkalinity levels...

    Was: $28.95
    Now: $24.61
  • Tropic Marin All-For-Reef, 500 ml. Tropic Marin All-For-Reef, 500 ml.

    Tropic Marin

    Tropic Marin All-For-Reef, 500 ml.

     Tropic Marin All-For-Reef, 500 ml. Tropic Marin All-For-Reef contains all the essential minerals and trace elements required by corals to grow in an easy to use balanced solution. Including calcium, magnesium, strontium, and carbonate hardness...

    $24.01
  • CoralRX PRO Coral Dip, 1 oz. Makes 17 gal. CoralRX PRO Coral Dip, 1 oz. Makes 17 gal.

    CoralRX

    CoralRX PRO Coral Dip, 1 oz. Makes 17 gal.

    CoralRX PRO Coral Dip, 1 oz. Makes 17 gal.Coral Rx was developed in 2006 for two purposes: to treat corals suffering with parasites, and as a prophylactic measure to promote healthy corals before parasites or bacterial infections become harmful. Coral Rx...

    $23.99
  • Two Little Fishes AcroPower, 500 ml.

    Two Little Fishies

    Two Little Fishes AcroPower, 500 ml.

    Two Little Fishes AcroPower, 500 ml. Use AcroPower from Two Little Fishies to provide amino acids to your corals to help build their skeletal structure. Amino acids can easily deplete in reef aquarium systems through protein skimmers and ultra low...

    $22.70
  • Red Sea Reef Foundations A (Ca/SR) 500 ML Red Sea Reef Foundations A (Ca/SR) 500 ML

    Red Sea

    Red Sea Reef Foundations A (Ca/SR) 500 ML

    Reef Foundation® A Calcium and strontium complex for balanced formation of the coral skeletonCa | Sr Calcium, magnesium, strontium and carbonate are the basic foundation elements of coral skeletons.All of these elements need to be available in...

    $21.99
60 of 103 Items