ADDITIVES (439)
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  • Seachem KanaPlex - 5 g / 0.2 oz
    $8.14
    No reviews

    KanaPlex is a blended kanamycin based medication that safely and effectively treats several fungal, and bacterial fish diseases (dropsy, popeye,...

  • ESV B-Ionic Calcium Buffer System - Two 1 Gallon Jugs (alk + calcium)
    $38.99
    No reviews

    B-Ionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement system, which does not contain any organic...

  • Esv B-IONIC Magnesium 1 Gallon
    $35.99
    No reviews

    B-Ionic Magnesium Through the chemical process known as "ion-pairing", magnesium ion concentration influences the saturation point for calcium carbonate in...

  • ESV 1 Gallon Alkalinity
    $21.99
    No reviews

    NOTE: This is component 1, ALK only B-Ionic Calcium Buffer is the original, unique, easy to use, two-component liquid supplement...

  • Hydrospace PNS Probio 16oz
    $29.99
    No reviews

    PNS ProBio The Natural Live Aquarium Food that Cleans Up After Itself: Provide superior nutrition, while controlling nutrients and organic...

  • Brightwell MicroBacter Purple M - 500 ml
    $23.86

    OUT OF STOCK

    No reviews

    Live Beneficial Bacteria – Advanced Purple Non-Sulfur Bacteria (PNSB) supplement that enhances natural nutrient cycling, supports biological filtration, and improves...

  • Brightwell MicroBacter Purple M - 1 Liter
    $40.18

    OUT OF STOCK

    No reviews

    Live Beneficial Bacteria – Advanced Purple Non-Sulfur Bacteria (PNSB) supplement that enhances natural nutrient cycling, supports biological filtration, and improves...

  • Hydrospace PNS Deep Cycle 16oz
    $35.99
    No reviews

    PNS Deep Cycle             A Functional Cohort of Real Reef Bacteria: Restore key anaerobic microbial genera...

  • Brightwell MicroBacterSTARTXLM - Professional 15X Strong Nitrifying Tank Starter Bacteria Culture - 250 ml /8.5 fl. oz.
    $26.64
    No reviews

    Professional 15x strength powerful live tank starter nitrifying bioculture, with much fewer temperature and shelf life restrictions than competing products,...

  • ReefHD Reef Flux Fluconazole Treatment
    $14.99
    No reviews

    Reef Flux Reef Flux is a fluconazole aquarium treatment that is effective against certain fungal fish infections. To avoid unintended...

  • Brightwell Aquatics Microbacter 7 - 1 Liter
    $37.46
    No reviews

    MicroBacter7 Complete Bioculture for Establishing Biological Filtration & Rapidly Improving Water Quality in all Marine & Freshwater Aquaria Overview: -Complex...

  • Two Little Fishies ReVive Coral Cleaner 16.8oz (500ml)
    $12.53
    No reviews

    Two Little Fishies ReVive Coral Cleaner is a new product developed by Julian Sprung for cleansing live stony corals. It...

  • Esv Kalkwasser 3.5 Pounds
    $26.99
    No reviews

    Calcium Hydroxide (Kalkwasser Powder)   Calcium Hydroxide is a proven standard for maintaining calcium concentration and alkalinity in closed marine...

  • Brightwell Aquatics Magnesion - Liquid Magnesium Supplement - 2L
    $29.63
    No reviews

    Overview: Highly-concentrated ionic magnesium solution. Provides magnesium, which helps regulate the balance between calcium and carbonates in aquarium water, and...

  • Brightwell Aquatics MicroBacter7 - Complete Bioculture for M 250ml
    $12.39

    OUT OF STOCK

    No reviews

    Overview: • Complex system of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifically formulated to establish biological...

  • Frank's Tanks F-Aiptasia Killer, 1oz
    $13.99
    No reviews

    Please stir this product with the stirring stick that is included and then shake vigorously upon receiving it and before...

  • Seachem Reef Fusion 2 - 2 Part Alkalinity - 4L
    $32.98
    No reviews

    Reef Fusion two part system   Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated...

  • Seachem Prime 250 ML
    $9.84
    No reviews

    Prime™ is a complete conditioner for both marine and freshwater use that removes chlorine, chloramine, and detoxifies ammonia and nitrite....

  • Brightwell MicroBacter Purple M - 4 Liter
    $132.94

    OUT OF STOCK

    No reviews

    Live Beneficial Bacteria – Advanced Purple Non-Sulfur Bacteria (PNSB) supplement that enhances natural nutrient cycling, supports biological filtration, and improves...

  • Seachem MetroPlex - 5 g / 0.2 oz
    $8.14
    No reviews

    MetroPlex is an effective and safe treatment for several protozoan and anaerobic bacterial diseases of fish (Cryptocaryon, Hexamita, Ichthyophthirius). It...

  • Seachem Focus - 5 g / 0.2 oz
    $8.14
    No reviews

    Focus is an antibacterial polymer for internal infections of fish. Focus is primarily intended to be mixed with food and/or...

  • Coral Rx Pro 1oz - makes 17 gallons
    $24.49
    No reviews

    Coral Rx was developed in 2006 for two purposes: to treat corals suffering with parasites, and as a prophylactic measure...

  • Brightwell Aquatics Lugol's Solution - Advanced Iodine for R
    $19.90
    No reviews

    Overview: Brightwell Aquatics LUGOL'S is an extremely powerful iodine solution. It should only be used by advanced reef aquarists to...

  • Fauna Marin ReBiotic 100% Natural 100 ml (50 grams) (1.76 ounces)
    $36.29
    No reviews

    Restore Bacterial Stability in Saltwater Aquariums Fauna Marin Rebiotic 100% Natural is a unique freeze-fried bacteria mix used for restoring...

  • Red Sea NO3:PO4-X Nitrate & Phosphate reducer 1 liter
    $35.99
    No reviews

    Red Sea NO3: PO4-X is a unique complex of carbons that are used by nutrient reducing bacteria. Each carbon in...

  • Brightwell Aquatics MicroBacter7 - Complete Bioculture for M - 2 litres
    $61.80

    OUT OF STOCK

    No reviews

    MicroBacter7 Complete Bioculture for Establishing Biological Filtration & Rapidly Improving Water Quality in all Marine & Freshwater Aquaria Overview: -Complex...

  • Two Little Fishes AcroPower Amino Acids for SPS corals - Gallon
    $82.99
    No reviews

    Two Little Fishes AcroPower Amino Acids for SPS corals - 1 Gallon AcroPower supplies amino acids that corals need to...

  • ESV B-Ionic Transition Elements - 32oz
    $24.99
    No reviews

    B-Ionic Transition Elements   B-Ionic Transition Elements is the latest product by ESV, formulated by Bob Stark in collaboration with...

  • Ultralife Red Slime Stain Remover, .71 Oz (treats 300 gallons)
    $16.95
    No reviews

    Previously know as the Ultralife Red Slime Remover, new packaging-same great product! Ultralife Red Slime Stain Remover is a revolutionary...

  • EcoSystem Aquarium Miracle Mud - 10 lbs - SALTWATER
    $59.99
    No reviews

    Miracle Mud is a product of EcoSystem Aquarium. Miracle Mud is comprised of up to 80% oceanic mud, harvested from...

  • ME Coral Alkalinity Powder (makes 1 gal)
    $14.99
    No reviews

    MECoral Kh powder is pre-measured to make a 1 gallon liquid solution when mixed with your RODI water.   MECoral uses...

  • Red Sea Reef Foundation C (Mg) - 500ml Liquid
    $19.99

    OUT OF STOCK

    No reviews

    Reef Foundation C A magnesium complex for balanced formation of coral skeletons Mg   Calcium, magnesium, strontium and carbonate are...

  • Seachem Reef Fusion 1 - 2 Part Calcium - 4L
    $32.98
    No reviews

    Reef Fusion two part system   Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated...

  • Boyd's Chemi-Clean 2 gram size (blue box) (16714-6)
    $17.99
    No reviews

    Chemi-clean removes red, black, blue-green and methane (bubble) producing algae from marine aquariums. It's completely safe for use in all...

  • ATI Elements - Zinc 100ml
    $18.95
    No reviews

    ATI Elements ATI Elements give you complete control to fine tune the amounts of trace minerals your aquarium needs. With...

  • ATI Elements - Manganese 100ml
    $18.95

    OUT OF STOCK

    No reviews

    ATI Elements ATI Elements give you complete control to fine tune the amounts of trace minerals your aquarium needs. With...

  • Red Sea Reef Colors B (Potassium) 500ml
    $19.99

    OUT OF STOCK

    No reviews

    Coral Colors B Potassium complex that promote the Red colors in corals K & Trace elements   Coral Colors B...

  • Red Sea Trace Colors A (Iodine/Halogens) - 500 ml
    $19.99
    No reviews

    Coral Colors A Iodine/Halogen complex that promote the pink colors in corals I2 | Br2 | F2   Coral Colors...

  • SEA LAB FORMULA #28 - 1 KILO BLOCK
    $29.99
    No reviews

    ONE HUGE BLOCK -GREAT FOR LARGER TANKS Sea-Lab Formula 28 is a mixture of naturally occurring buffer compounds that maintains...

  • SEA LAB FORMULA #28 - BOX OF 24 BLOCKS
    $29.99
    No reviews

    Box of 24 Cubes Sea-Lab Formula 28 is a mixture of naturally occurring buffer compounds that maintains natural ocean concentrations...

  • Frank's Tanks F-Aiptasia Killer, 2oz
    $24.99

    OUT OF STOCK

    No reviews

    Please stir this product with the stirring stick that is included and then shake vigorously upon receiving it and before...

  • PolypLab Reef Primer 180g Coral Dip
    $44.99
    No reviews

    Help prevent Zoanthid Eating Nudibranchs, Montipora Eating Nudibranchs, Acropora Eating Flatworms, Bristleworms, Zoanthid Eating Spiders Red Flatworms, Filamentous Hair Algae,...

  • PolypLab Medic 30ml Reef Safe Fish Mediciation
    $39.99
    No reviews

    What is Medic? Medic is a highly effective water conditioner used to de-pollute water in both marine and freshwater environments....

  • Blue Life USA Aiptasia Rx
    $12.62
    No reviews

      Benefits: Aiptasia Control is a simple, Veterinarian approved, and quick solution for controlling aiptasia and other nuisance anemones. This...

  • ME Coral Calcium Powder (makes 1 gal)
    $14.99
    No reviews

    MECoral Calcium (Ca) powder is premeasured  to make a 1 gallon liquid solution when mixed with your RODI water.   MECoral...

  • Brightwell Aquatics NeoPhos - 2 L
    $31.56

    OUT OF STOCK

    No reviews

    Overview Used in conjunction with MICROBACTER7 and REEF BIOFUEL or KATALYST, enables natural nitrogen uptake to take place in systems...

  • Brightwell Aquatics MicroBacter Clean 500ml
    $23.86
    No reviews

    Microbial culture & enzyme blend designed to target and clean surfaces of live rock and more Overview Complex system of...

  • Brightwell ChaetoGro - 500 ml / 17 fl. oz.
    $22.52
    No reviews

    ChaetoGro Complete phosphate and nitrate free multi-nutrient with iron, cobalt and molybdenum for chaetomorpha growth and vigor in all marine...

  • Brightwell MicroBacter QuikCycl Ammonia nutrient for fishless cycle - 60 ml / 2 oz
    $4.23
    No reviews

    Professional nutrients for fishless cycling and establishing strong nitrifying bacteria beds in freshwater and marine aquariums Overview READ ALL BEFORE...

  • Two Little Fishies Liquid Instant Phosphate Binder 500 ml
    $25.86

    OUT OF STOCK

    No reviews

    Got a little Phosphate problem? You can solve that in a hurry with PhosBan GFO granular ferric oxyhydroxide. But if...

  • Red Sea NO3:PO4-X Nitrate & Phosphate reducer 5 Liter Jug
    $129.00
    No reviews

    Red Sea NO3: PO4-X is a unique complex of carbons that are used by nutrient reducing bacteria. Each carbon in...

  • Seachem Prime 500 mL / 17 fl. oz. l
    $18.69
    No reviews

    Prime" is the complete and concentrated conditioner for both fresh and salt water. Prime" removes chlorine, chloramine and ammonia. Prime"...