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Chemistry

Water chemistry is one of the most important engines of the aquarium. Chemistry governs every factor inside the aquarium & directly effects the inhabitants. 

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  • On Sale 15%
    (13 Elements) Sample ICP Mass Spec Saltwater Aquarium Water Test - ICP Analysis
    On Sale 15%

    (13 Elements) Sample ICP Mass Spec Saltwater Aquarium Water Test - ICP Analysis

    ICP Analysis

    $14.95
    $12.71
    This is a 13 element sample test so you can check it out.  The full version has 50+ elements. The full version test is the first Mass Spec test offered to the aquarium industry.  It will test over 50 elements down to ppt, parts per trillion...
  • On Sale 15%
    AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishies
    On Sale 15%

    AccuraSea Refractometer Calibration Solution (250 ml) - Two Little Fishies

    Two Little Fishies

    $11.99
    $10.19
    Do you think it’s important to maintain salinity precisely? We’re with you. That’s why we created AccuraSea Seawater Reference Solution, the only calibration solution of its kind made from real seawater. It’s pure natural sea...
  • On Sale 15%
    NeoNitro (250 mL) - Brightwell
    On Sale 15%

    NeoNitro (250 mL) - Brightwell

    Brightwell Aquatics

    $6.49
    $5.52
    Balanced Nitrogen Source for Nitrogen-Limited, Low-Nutrient Reef Aquaria Overview Used in conjunction with MICROBACTER7 and REEF BIOFUEL or KATALYST, enablesnatural phosphorus uptake to take place in systems with inadequate nitrogen content,lowering...
  • On Sale 25%
    (OVERSTOCK) (Expires 11/2025) (HI781-25) Marine Low Range Nitrate Checker Reagents (25 Tests) - Hanna Instruments
    On Sale 25%

    (OVERSTOCK) (Expires 11/2025) (HI781-25) Marine Low Range Nitrate Checker Reagents (25 Tests) - Hanna Instruments

    Hanna Instruments

    $16.00
    $11.99
    The HI781-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their HI781 Marine Nitrate Low Range Colorimeter. These reagents follow a colorimetric method in which the reaction between...
  • On Sale 15%
    Iodine Concentrate (250 ml) - Two Little Fishies
    On Sale 15%

    Iodine Concentrate (250 ml) - Two Little Fishies

    Two Little Fishies

    $9.99
    $8.49
    Two Little Fishies Iodide and iodine supplement is made from potassium iodide and seaweed extracts. Use this supplement to provide an extra boost of this important element and observe the positive effects. Great for growing Xenia, other soft corals and...
  • Phosphate Pro Test Kit (PO4) - 100 Tests - Red Sea

    Phosphate Pro Test Kit (PO4) - 100 Tests - Red Sea

    Red Sea

    $54.99
    Red Sea’s Phosphate Pro Test Kit is an advanced colorimetric test with comparator, measuring the level of phosphate in your reef aquarium to an exceptionally high accuracy of 0.02ppm PO4. Phosphate Pro Test Kit, when used in conjunction with...
  • On Sale 15%
    Alkalin-P 8.3 - Dry pH/KH Builder (1000 gm) - Brightwell
    On Sale 15%

    Alkalin-P 8.3 - Dry pH/KH Builder (1000 gm) - Brightwell

    Brightwell Aquatics

    $17.60
    $14.96
    KH Buffer Powder for all Marine Fish and Reef Aquaria Overview Raises alkalinity, adjust pH to 8.3 Unlike single component KH products such as sodium carbonate, Alkalin 8.3P is a multi-component automatic buffer that regulates pH and its use makes...
  • On Sale 15%
    Pristine (500 ml) Bacterial Water Conditioner - Seachem
    On Sale 15%

    Pristine (500 ml) Bacterial Water Conditioner - Seachem

    Seachem

    $19.23
    $16.35
    Pristine™ uses bio-augmentation, a non-chemical and natural method, to improve water quality. It provides bacteria that break down excess food, waste and detritus in freshwater and marine systems. It will also reduce excess nutrients (e.g. ammonia,...
  • On Sale 15%
    Kalkwasser Dry Powder Mix (500 gm - 1.1 lbs) - Two Little Fishies
    On Sale 15%

    Kalkwasser Dry Powder Mix (500 gm - 1.1 lbs) - Two Little Fishies

    Two Little Fishies

    $15.26
    $12.97
    Calcium Supplement Mix. Our pure source of Calcium Hydroxide makes the ideal solution for replenishing calcium and maintaining alkalinity, for corals, clams, and calcareous algae that build skeletons of calcium carbonate. It also helps maintain pH,...
  • Phosphate Marine Test Kit - Red Sea

    Phosphate Marine Test Kit - Red Sea

    Red Sea

    $28.99
    Phosphate Test Kit Accurate measurement of Phosphate in marine aquariums PO4 Red Sea’s colorimetric Phosphate test kit provides a quick and reliable measurement of Phosphate in your aquarium to an accuracy of 0.1ppm PO4. This test kit, in...
  • On Sale 15%
    Garlic Guard (250 mL) - Seachem
    On Sale 15%

    Garlic Guard (250 mL) - Seachem

    Seachem

    $7.38
    $6.27
    GarlicGuard™ is an appetite/flavor enhancer for freshwater and saltwater fish. GarlicGuard™ will help renew the interest of poor or finicky eaters. GarlicGuard™ contains naturally derived garlic oil. GarlicGuard™ also contains...
  • On Sale 15%
    LITTLE ReBorn Calcium Reactor Media (8.8 lbs) -  Two Little Fishies
    On Sale 15%

    LITTLE ReBorn Calcium Reactor Media (8.8 lbs) - Two Little Fishies

    Two Little Fishies

    $35.66
    $30.31
    Reborn® coarse aragonite media for calcium reactors is composed of fossil skeletons of reef building corals sustainably harvested from pristine sites in the Western Pacific. When dissolved, ReBorn replenishes calcium and carbonate alkalinity,...
  • On Sale 15%
    Alkalin8.3 - Liquid pH Buffer & Alkalinity KH -Builder (2L) - Brightwell
    On Sale 15%

    Alkalin8.3 - Liquid pH Buffer & Alkalinity KH -Builder (2L) - Brightwell

    Brightwell Aquatics

    $25.35
    $21.55
    Concentrated KH Buffer Supplement for All Marine Fish and Reef Aquaria Overview Alkalin 8.3P is a multi-component automatic buffer that regulates pH, unlike sodium carbonate its use makes for a much more stable aquarium. Eliminates pH and KH...
  • Sea Salt (25  kg - 200 Gallons) Box - Aquaforest

    Sea Salt (25 kg - 200 Gallons) Box - Aquaforest

    Aquaforest

    $82.39
    Synthetic marine salt for aquariums with fish and less delicate corals and invertebrates. When setting up new aquariums it is recommended that the first animals are placed no sooner than 10-14 days after filling the aquarium. After dissolving the salt,...
  • On Sale 15%
    Oxygen (O2) Ultra Test Kit - Salifert
    On Sale 15%

    Oxygen (O2) Ultra Test Kit - Salifert

    Salifert

    $19.99
    $16.99
    Salifert Oxygen Profi-Test Corals and marine fish require very high levels of oxygen concentration because of the low solubility of oxygen in salt water so it is very important to regularly test the level of oxygen present. The Salifert Oxygen Profi-Test...
  • Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments

    Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments

    Hanna Instruments

    $22.00
    The HI731339P is a volumetric pipette designed to measure and transfer exactly 100 µL of solution to a cuvette. To obtain the highest accuracy and precision from the HI758 marine calcium Checker it is necessary to add exactly 100 µL of...
  • HI721 Iron Checker - Hanna Instruments

    HI721 Iron Checker - Hanna Instruments

    Hanna Instruments

    $63.95
    The Hanna Iron Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional...
  • On Sale 15%
    ATC Seawater Refractometer - DD Aquarium Solutions
    On Sale 15%

    ATC Seawater Refractometer - DD Aquarium Solutions

    All Misc Brands

    $54.99
    $46.74
    Almost all, if not all, of the refractometers currently available to the aquarium hobby are designed for measuring saltwater (sodium chloride or brine solution) and not true ‘seawater’. Although seawater is mostly sodium chloride it also...
  • High Range pH Test Kit (160 Tests) - API

    High Range pH Test Kit (160 Tests) - API

    API

    $9.48
    High Range pH Test Kit The API® High Range pH Test Kit measures pH changes in marine aquariums, aquariums with African Cichlids, and very alkaline tap water. The API® High Range pH Test Kit reads the pH of water within the high range of 7.4...
  • On Sale 15%
    Reef Complete (500 mL) - Seachem
    On Sale 15%

    Reef Complete (500 mL) - Seachem

    Seachem

    $11.33
    $9.63
    Reef Complete® is a concentrated (160,000 mg/L) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater without affecting pH. Calcium and carbonates are essential to all coral growth. If either...
  • Reef Crystals Salt Mix Bucket (Makes 160 Gallons) - Instant Ocean

    Reef Crystals Salt Mix Bucket (Makes 160 Gallons) - Instant Ocean

    Instant Ocean

    $81.99
    Enriched formulation. Optimum effectiveness. Formulated specially for use in reef aquariums, Reef Crystals contains essential ocean reef elements in concentrations greater than those found in natural sea water. Extra Calcium to help ensure the...
  • HI70031P 1413 20 ml (Single Pack) - Hanna Instruments

    HI70031P 1413 20 ml (Single Pack) - Hanna Instruments

    Hanna Instruments

    $1.49
    Technical SpecificationsMfr #: HI70031PItem: Calibration Solution    Container: 20mLType: Electric ConductivityRange: 1413 uS/cm    Container: 20mLProduct DescriptionCalibration PacketConcentration 1413 Microsiemens Per...
  • On Sale 15%
    Marine (pH) Test Kit - Elos
    On Sale 15%

    Marine (pH) Test Kit - Elos

    ELOS

    $16.50
    $14.03
    The pH-value or acid value indicates how acidic or alkaline water is. It is a measure of the concentration of the acidic or alkaline components in a hydrous solution. Pure water will react neutral and has a pH-value of 7. If the acidic components are...
  • On Sale 15%
    PINPOINT pH Monitor - American Marine
    On Sale 15%

    PINPOINT pH Monitor - American Marine

    American Marine

    $89.99
    $76.49
    The PINPOINT® pH Monitoris in use by thousands of customers worldwide. This affordable unit remains the only full-time pH monitor with .01 resolution. The PINPOINT® pH Monitor is sold complete with probe and calibration fluids (9 volt battery not...
  • On Sale 15%
    Stability (100 ML) - Seachem
    On Sale 15%

    Stability (100 ML) - Seachem

    Seachem

    $4.35
    $3.70
    Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: "new tank syndrome". Stability® is formulated specifically for the aquarium and contains a...
  • Zeo (1000 ml)  -  NYOS Aquatics

    Zeo (1000 ml) - NYOS Aquatics

    NYOS

    $14.99
    ZEO NYOS® ZEO is a high-quality, specially adapted zeolite mixture for seawater aquariums. Regular use reduces nitrate values permanently, simply and safely to the detection limit. Naturally pure, high-quality, free of additives, carrier...
  • HI70031P 1413 20 ml (25 Pack) - Hanna Instruments

    HI70031P 1413 20 ml (25 Pack) - Hanna Instruments

    Hanna Instruments

    $29.00
    Technical SpecificationsMfr #: HI70031PItem: Calibration Solution    Container: 20mLType: Electric ConductivityRange: 1413 uS/cm    Container: 20mLProduct DescriptionCalibration PacketConcentration 1413 Microsiemens Per...
  • On Sale 15%
    Reef Code B Balanced Calcium & Alkalinity System Part B 2 L - Brightwell Aquatics
    On Sale 15%

    Reef Code B Balanced Calcium & Alkalinity System Part B 2 L - Brightwell Aquatics

    Brightwell Aquatics

    $28.45
    $24.18
    Overview The carbonate-bearing component of a two-part method for dosing calcium and carbonates (the substances largely responsible for increasing alkalinity (”buffering capacity”)) in the same ratio as that found in natural seawater...
  • Foundation Skeletal Elements ABC+ (1 KG) - Red Sea

    Foundation Skeletal Elements ABC+ (1 KG) - Red Sea

    Red Sea

    $31.99
    Red Sea’s Reef Foundation ABC+ is a uniquely formulated powder supplement containing all of the elements of Foundation A, B & C, plus Red Sea’s Coral Colors A & B (potassium, boron, iodine & bromine) formulated in the exact ratio...
  • On Sale 15%
    Reef Fusion "2" Two Part Calcium/Buffer System (4 L) - Seachem
    On Sale 15%

    Reef Fusion "2" Two Part Calcium/Buffer System (4 L) - Seachem

    Seachem

    $32.33
    $27.48
    Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated to provide the essentials for the reef aquarium. Reef Fusion 1™ provides calcium, while Reef Fusion 2™ provides alkalinity. When used together, the Reef...
  • On Sale 15%
    Magnesion - Liquid Magnesium Supplement 2L - Brightwell
    On Sale 15%

    Magnesion - Liquid Magnesium Supplement 2L - Brightwell

    Brightwell Aquatics

    $29.99
    $25.49
    Concentrated Magnesium Supplement for All Marine Fish & Reef Aquaria Overview Highly-concentrated ionic magnesium solution. Provides magnesium, which helps regulate the balance between calcium andcarbonates in aquarium water, and is a...
  • K+ Elements Pro Coral Trace 1 (200 ml) - Tropic Marin

    K+ Elements Pro Coral Trace 1 (200 ml) - Tropic Marin

    Tropic Marin

    $13.32
    Tropic Marin® K+ Elements contains a selection of essential cationic trace elements for the promotion of growth and the natural coloring of the corals. Trace elements are natural minerals which are needed by all aquarium inhabitants to...
  • Copper Test Kit (90 Tests) - API

    Copper Test Kit (90 Tests) - API

    API

    $12.48
    Copper Test Kit Copper – a treatment for many parasitic infections – must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective, or can increase to a point that is detrimental to fish...