ADDITIVES (439)
Best selling Best selling
  • 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...

  • 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,...

  • Brightwell MicroBacter Purple M - 500 ml
    $21.69

    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 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 - 1 Liter
    $36.52

    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...

  • 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...

  • Hydrospace PNS Deep Cycle 16oz
    $35.99
    No reviews

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

  • 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...

  • 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...

  • Brightwell MicroBacter Purple M - 4 Liter
    $120.85

    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...

  • 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...

  • 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...

  • Brightwell Aquatics Magnesion - Liquid Magnesium Supplement - 2L
    $26.93
    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 Microbacter 7 - 1 Liter
    $34.05
    No reviews

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

  • 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...

  • 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 MicroBacter7 - Complete Bioculture for M - 2 litres
    $56.18

    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...

  • 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...

  • Brightwell Aquatics Lugol's Solution - Advanced Iodine for R
    $18.09
    No reviews

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

  • 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...

  • 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 MicroBacterSTARTXLM - Professional 15X Strong Nitrifying Tank Starter Bacteria Culture - 250 ml /8.5 fl. oz.
    $24.21
    No reviews

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

  • Brightwell Aquatics MicroBacter7 - Complete Bioculture for M 250ml
    $11.26
    No reviews

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

  • 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...

  • 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...

  • 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...

  • 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,...

  • 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...

  • 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...

  • 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...

  • Brightwell Aquatics CoralAmino - Free Form Amino Acid Supplement 250ml
    $46.62
    No reviews

    Overview: Complex of free-form amino acids in the same ratios found within tissues of stony corals. Beneficial to all corals...

  • Fauna Marin ELEMENTALS TRACE Fe - Iron 250ml
    $27.49

    OUT OF STOCK

    No reviews

    Highly Concentrated Iron Fauna Marin Elementals Trace Fe is a high purity Iron solution for compensating Iron deficiencies in reef...

  • 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...

  • Triton Core7 Base Elements 3.8L (1 Gallon) Complete Set
    $159.00
    No reviews

    Included: 4 x 1 gal jugs.  Part 1, Part 2, Part 3a and Part 3B   For Triton Method:  CORE7...

  • Seachem NeoPlex - 10 g / 0.4 oz
    $8.14
    No reviews

    NeoPlex is a broad spectrum antibiotic effective against most external infections of both marine and freshwater fish. Used as directed,...

  • 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....

  • 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...

  • 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 Reef Snow - 250ml - Replicates Marine Snow in al
    $11.24
    No reviews

    Overview • Complex of carbonate-bound, non-conservative major, minor, and trace elements in aragonite ratios, as well as marine-derived proteins and...

  • Blue Life USA Safety Stop - Instant Quarantine - 3 PACK
    $16.92
    No reviews

    Includes 3 Single Packs Safety Stop is a simple and effective way to help protect your Saltwater and Freshwater aquarium...

  • 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...

  • 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....

  • Boyd's Chemi-Clean 6 gram size (red box) (76714-8)
    $33.21
    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...

  • Brightwell Aquatics MicroBacter7 - Complete Bioculture for M 500ml
    $20.47
    No reviews

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

  • Copper Power Blue 1 Gallon
    $99.99

    OUT OF STOCK

    No reviews

    COPPER POWER has been a preferred choice for marine fish enthusiasts fish stores, and aquariums since 1984. We are happy...

  • Copper Power Blue 16oz
    $16.99
    No reviews

    COPPER POWER has been a preferred choice for marine fish enthusiasts fish stores, and aquariums since 1984. We are happy...

  • UltraLife Blue Green Slime Stain Remover
    $12.95
    No reviews

    “Blue-Green Slime Stain Remover” UltraLife Blue Green Slime Stain Remover is a revolutionary time tested product, that will efficiently and...

  • Joe's Juice 20ML
    $8.99
    No reviews

    JoesJuice is an easy to use Reef safe product that will kill Aiptasia and Majano anemones. Simply feed the problem...

  • Brightwell Aquatics Restor - Liquid Coral Tissue Nutritional Supplement 500 ml
    $20.47
    No reviews

    Advanced Coral Tissue Supplement for maximum growth rate for all Corals & Their Allies   Encourages health, growth, reproduction, and...