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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%
    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...
  • Nitrate Pro Test Refill - Red Sea

    Nitrate Pro Test Refill - Red Sea

    Red Sea

    $30.99
    Reagent refill for Red Sea Nitrate Pro Test Kit. Enough reagent for 100 tests. Red Sea reagent refills make this line of test kits one of the most affordable high quality test kits available.  
  • KH Coralline Gro - (500 ml) - Red Sea

    KH Coralline Gro - (500 ml) - Red Sea

    Red Sea

    $19.99
    Marine buffer supplement with trace elements that promote the development of Coralline Algae KH Coralline algae will grow naturally, without any special supplements in all reef systems optimized for hard corals. KH Coralline Gro is a complex of...
  • On Sale 15%
    Iodine (I2) Test Kit - Salifert
    On Sale 15%

    Iodine (I2) Test Kit - Salifert

    Salifert

    $29.30
    $24.91
    Trust your aquarium to Salifert.This test will accurately measure the form of iodine found in seawater, iodate.  Salifert's wide range of available tests have all been designed to detect the smallest traces of certain elements, without interference...
  • On Sale 15%
    PhosGuard Phosphate Remover (250 mL) - Seachem
    On Sale 15%

    PhosGuard Phosphate Remover (250 mL) - Seachem

    Seachem

    $7.15
    $6.08
    PhosGuard is spherical. Its shape allows for maximum water flow through the media. Granular phosphate removers can become compacted, dramatically limiting their capacity to remove phosphate. If the media can’t come into contact with the water, it...
  • NP-Bacto-Balance (500 ml) - Tropic Marin

    NP-Bacto-Balance (500 ml) - Tropic Marin

    Tropic Marin

    $25.49
    The nutrient ratios for corals and sponges in reef tanks are ideal when nitrates and phosphates are present in the lowest concentrations. Tropic Marin® NP-Bacto-Balance uses a mix of select organic carbon compounds and suitable inorganic...
  • HI701 Free Chlorine Checker - Hanna Instruments

    HI701 Free Chlorine Checker - Hanna Instruments

    Hanna Instruments

    $67.99
    The Hanna Free Chlorine 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...
  • Marine Test Kit Nitrite & Nitrate - Red Sea

    Marine Test Kit Nitrite & Nitrate - Red Sea

    Red Sea

    $26.99
    It’s all in the balance This combined test kit provides either 100 nitrite or 50 Nitrate and 50 Nitrite advanced colorimetric tests for marine aquariums. This kit is essential during the maturation of all marine and reef...
  • Magnesium Reefer (MG) Test Kit 50 Tests - NYOS Aquatics

    Magnesium Reefer (MG) Test Kit 50 Tests - NYOS Aquatics

    NYOS

    $19.99
    MAGNESIUM REEFER NYOS® REEFER test kits - taking measurements at the laboratory level at an attractive price Water properties as close to nature are the key for every aquarium's success. However, monitoring relevant parameters in seawater is...
  • 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,...
  • 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...
  • On Sale 15%
    Purple Up (8 oz) - Caribsea
    On Sale 15%

    Purple Up (8 oz) - Caribsea

    Caribsea

    $11.75
    $9.99
    PurpleUp™ - uses a unique dual method approach to coralline algae acceleration. This approach is so unique that PurpleUp has been awarded a US patent (US patent No. 7,565,883). It contains ionic calcium; which immediately raises dissolved calcium...
  • 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,...
  • Hydrometer - Tropic Marin

    Hydrometer - Tropic Marin

    Tropic Marin

    $36.65
    NOTE: The specific gravity is temperature dependent. With increasing temperature the specific gravity decreases. Therefore, the measured water temperature should be 25 °C / 77 °F to obtain a correct result.For an exact, reliable measure of...
  • 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%
    TURBOSTART 700 Freshwater 1 Gallon (128 Ounces) Live Nitrifying Bacteria - Fritz
    On Sale 15%

    TURBOSTART 700 Freshwater 1 Gallon (128 Ounces) Live Nitrifying Bacteria - Fritz

    Fritz Aquatics

    $297.49
    $252.87
    Live product. Keep refrigerated. Do not freeze. Refrigerated life is 4 months with a temperature Range of 34 - 50 degrees F. Use before expiration date on bottom of bottle. Shipping: Live Foods Ship on Select Days & Have a 100% Arrive Alive...
  • 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...
  • Magnetic Mini-Stirrer - 115V (HI190M-1) - Hanna Instruments

    Magnetic Mini-Stirrer - 115V (HI190M-1) - Hanna Instruments

    Hanna Instruments

    $89.99
    The HI190M is a compact and lightweight magnetic stirrer. With a small footprint, lack of laboratory bench space is no longer a concern. Built to last with a protective covering and a user-adjustable stirring speed, this small stirrer is great for...
  • On Sale 15%
    Iron Concentrate (250 ML - 8 oz) - Two Little Fishies
    On Sale 15%

    Iron Concentrate (250 ML - 8 oz) - Two Little Fishies

    Two Little Fishies

    $5.18
    $4.40
    Two Little Fishies Iron Concentrate is a solution that contains the elements iron and manganese, which are essential to the health of all plants, including the symbiotic zooxanthellae in corals and sea anemones, and sea-grasses. Two Little Fishies Iron...
  • On Sale 15%
    Pinpoint Wireless Thermometer - American Marine
    On Sale 15%

    Pinpoint Wireless Thermometer - American Marine

    American Marine

    $24.99
    $21.24
    PINPOINT® Wireless Thermometer will measure the temperature at the waterproof probe tip on the remote sensor(s), utilizing a radio wave signal, and will display the temperature in Fº or Cº degrees. PINPOINT® Wireless...
  • On Sale 15%
    Denitrate (2 Liter) - Seachem
    On Sale 15%

    Denitrate (2 Liter) - Seachem

    Seachem

    $22.42
    $19.06
    denitrate™ is an economical, natural, porous material with a pore distribution and geometry that promotes both aerobic nitrification within the first few millimeters of depth and anaerobic denitrification at the core. The material has a high...
  • On Sale 20%
    Pharma Soda Ash 1 Gallon Mix (Single Use) - Bulk Reef Supply
    On Sale 20%

    Pharma Soda Ash 1 Gallon Mix (Single Use) - Bulk Reef Supply

    Bulk Reef Supply

    $10.99
    $8.79
    Ultra-pure Grade Soda Ash for 2-part dosing in your reef tank! Bulk Reef Supply 2-part additives are the perfect solution to replenish the intake of calcium and alkalinity coral consumes when it grows. Using only pharmaceutical grade...
  • HI721 Iron Checker - Hanna Instruments

    HI721 Iron Checker - Hanna Instruments

    Hanna Instruments

    $67.99
    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...
  • Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments

    Graduated Pipette - 100 µL (HI731339P) - Hanna Instruments

    Hanna Instruments

    $29.99
    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...
  • On Sale 15%
    Clarity (500 ML) - Seachem
    On Sale 15%

    Clarity (500 ML) - Seachem

    Seachem

    $16.71
    $14.20
    Clarity™ is the ultimate clarifier for both fresh and saltwater. It employs an advanced polymeric flocculating agent that is both reef and plant safe. Clarity™ is the only clarifier on the market that does it all! Clarity™ will clear...
  • Reef Salt Mix 200 Gallon (5 x 5kg Box) - Aquaforest

    Reef Salt Mix 200 Gallon (5 x 5kg Box) - Aquaforest

    Aquaforest

    $80.90
    Aquaforest Reef Salt is a synthetic marine salt designed specifically for aquacultured corals. The formula contains micro and macro nutrients necessary for proper coral growth and pigmentation, along with amino acids and Vitamin C for immune support...
  • pH 4.01 Calibration Buffer 20 ml (Pack of 25) - Hanna Instruments

    pH 4.01 Calibration Buffer 20 ml (Pack of 25) - Hanna Instruments

    Hanna Instruments

    $49.99
    HI70004P is a premium quality pH 4.01 calibration buffer solution. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna’s line of calibration buffers have...
  • 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...
  • On Sale 15%
    MW600 Dissolved Oxygen Meter - Milwaukee Instruments
    On Sale 15%

    MW600 Dissolved Oxygen Meter - Milwaukee Instruments

    Milwaukee Instruments

    $208.00
    $176.80
    Milwaukee MW600 LED Economy Portable Dissolved Oxygen Meter with 2 Point Manual Calibration, 0.0 - 19.0 mg/L, 0.1 mg/L Resolution, +/-1.5 percent Accuracy, 100 Percent Saturation Range The Milwaukee MW600 is a portable dissolved oxygen (DO) meter for...
  • 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%
    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...
  • On Sale 15%
    COLORS 200% Coral Amino Acids (50 ml) - Polyplab
    On Sale 15%

    COLORS 200% Coral Amino Acids (50 ml) - Polyplab

    PolypLab

    $49.99
    $42.49
    Polyplab Colors is ultra pure Amino Acids designed for the most demanding coral growers.  User discretion is advised, do not overdose.  1 Dropper or 5x Drops per 100 Gallons of water volume daily.  Refrigerate after opening. It is...
  • 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%
    MW500 Standard Portable ORP Meter - Milwaukee Instruments
    On Sale 15%

    MW500 Standard Portable ORP Meter - Milwaukee Instruments

    Milwaukee Instruments

    $109.00
    $92.65
    Standard portable meters with no frills! Milwaukee’s low cost durable meters for quick and reliable measurements. Milwaukee’s Standard meters are manufactured to be easy to use, practical and accurate. Ideal for the classroom, laboratory...
  • 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...