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Water Testing

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  • On Sale 15%
    Nitrate Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics
    On Sale 15%

    Nitrate Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics

    Fritz Aquatics

    $13.49
    $11.47
    Easy to Read Instructions Essential for a Healthy Tank Accurate in both Fresh and Saltwater About Fritz Liquid Test Kits - Nitrate Nitrate is considered the non-toxic end product of the ammonia cycle. While not directly a problem for fish...
  • Carbonate Hardness (Alk/KH) Reefer Test Kit 50 Tests - NYOS Aquatics

    Carbonate Hardness (Alk/KH) Reefer Test Kit 50 Tests - NYOS Aquatics

    NYOS

    $14.99
    CARBONATE HARDNESS 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...
  • PO4 Phosphate Test Professional - Tropic Marin

    PO4 Phosphate Test Professional - Tropic Marin

    Tropic Marin

    $27.28
    Phosphates (PO43–) are important nutrients for all plants and are vital for the energy metabolism of every living cell. Phosphates are released into the aquarium water via food and the decomposition process of organic matter. However, an...
  • On Sale 15%
    pH55 Waterproof Pocket PH/Temp Tester - Milwaukee
    On Sale 15%

    pH55 Waterproof Pocket PH/Temp Tester - Milwaukee

    Milwaukee Instruments

    $64.00
    $54.40
    IP65 Waterproof pH tester with Large dual-level LCD that displays pH and temperature (°C or °F). The large display shows readings in an extended range from -2.0 to 16.0 pH and simultaneously shows temperature from -5.0 to 105.0°C or 23.0 to...
  • On Sale 15%
    Calcium Liquid Test Kit - Fritz Aquatics
    On Sale 15%

    Calcium Liquid Test Kit - Fritz Aquatics

    Fritz Aquatics

    $12.74
    $10.83
    Accurate in both Fresh and Saltwater Easy to Read Instructions Essential to Monitoring Proper Ionic Balance About Fritz Liquid Test Kits - Calcium Calcium (Ca2+) is vital to many biological functions. In saltwater aquariums, calcium should...
  • Compact Lab - Essentials Test Kit (5 Parameters) - Tropic Marin

    Compact Lab - Essentials Test Kit (5 Parameters) - Tropic Marin

    Tropic Marin

    $63.64
    The test set Tropic Marin® Compact Lab includes all the important tests for prompt and precise determination of water values. The pH value, alkalinity, phosphate level, nitrite and nitrate content as well as the ammonia concentration of the...
  • Waterproof pH/Temp Meter - HM Digital

    Waterproof pH/Temp Meter - HM Digital

    HM Digital

    $79.95
    Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee,...
  • On Sale 15%
    Ammonia Liquid Test Kit (Up to 130 Tests) - Fritz Aquatics
    On Sale 15%

    Ammonia Liquid Test Kit (Up to 130 Tests) - Fritz Aquatics

    Fritz Aquatics

    $14.99
    $12.74
    Accurate in both Fresh and Saltwater Must-Have for Every Aquarist Essential During New Tank Setup About Fritz Liquid Test Kits - Ammonia Ammonia is one of the most important parameters to monitor in aquariums because any amount can be...
  • HI-7030M Conductivity Solution, (230 mL) bottle - Hanna Instruments

    HI-7030M Conductivity Solution, (230 mL) bottle - Hanna Instruments

    $11.99
    Maximum accuracy is high on the agenda here at Hanna. Browse our Conductivity Calibration Solutions specifically produced for Conductivity meters and electrodes. Hanna conductivity electrodes can be calibrated in just a few minutes, wherever you are...
  • pH Electrode Storage Solution - HM Digital

    pH Electrode Storage Solution - HM Digital

    HM Digital

    $9.99
    PH storage solution for HM Digital’s PH-200 / PH-80 as well as other brands of pH meters. Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be...
  • On Sale 15%
    Reef Tank Beginner Saltwater Test Set
    On Sale 15%

    Reef Tank Beginner Saltwater Test Set

    Salifert

    $119.99
    $101.99
    Generic Refractometer - It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and...
  • KH Pro Alkalinity Test Professional - Tropic Marin

    KH Pro Alkalinity Test Professional - Tropic Marin

    Tropic Marin

    $25.45
    The carbonate hardness (KH)* or alkalinity* of a water sample characterizes the buffering ability, ie the ability to maintain the pH value of the water. It is largely determined by the proportion of hydrogen carbonate ions in the water. As the...
  • On Sale 15%
    FOWLR Deluxe Saltwater Test Set (HI98319, 781, Salifert PO4)
    On Sale 15%

    FOWLR Deluxe Saltwater Test Set (HI98319, 781, Salifert PO4)

    Salifert

    $129.99
    $110.49
    Hanna Salinity/Temperature Checker - HI98319 Salinity/Temperature Meter - Each meter is supplied with: CR2032 battery (inside the meter), Storage / Protection sleeve, Instruction manual, Quality certificate, and 35.00 ppt calibration standard sachet (4...
  • On Sale 15%
    FOWLR Beginner Saltwater Test Set (Refractometer, Salifert NO3, PO4)
    On Sale 15%

    FOWLR Beginner Saltwater Test Set (Refractometer, Salifert NO3, PO4)

    Salifert

    $65.99
    $56.09
    Generic Refractometer - It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and...
  • On Sale 15%
    Wide Range pH Liquid Test Kit (Up to 250 Tests) - Fritz Aquatics
    On Sale 15%

    Wide Range pH Liquid Test Kit (Up to 250 Tests) - Fritz Aquatics

    Fritz Aquatics

    $8.62
    $7.33
    Convienent Wide Range - 5.0 to 9.0 Works in Fresh and Saltwater Easy to Read Results About Fritz Liquid Test Kits - Wide Range pH Testing the pH of your aquarium water regularly to make proper adjustments is crucial to keep your...
  • Iodine Pro (I2) Reef Test Kit - Red Sea

    Iodine Pro (I2) Reef Test Kit - Red Sea

    Red Sea

    $54.99
    Unique test, measuring the level of total iodine in your UNLS aquarium, with high accuracy of 0.01 ppm. Red Sea’s Iodine Pro Reef Test Kit is a unique test, measuring the level of total iodine in your reef aquarium to a high accuracy of 0.01 ppm...
  • On Sale 15%
    Copper Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics
    On Sale 15%

    Copper Liquid Test Kit (Up to 90 Tests) - Fritz Aquatics

    Fritz Aquatics

    $11.99
    $10.19
    Accurate in both Fresh and Saltwater Essential when Medicating with Copper-based Treatments Measures Free and Total Copper About Fritz Liquid Test Kits - Copper Copper is commonly used in aquariums to treat external parasitic infections,...
  • HI73128 Electrode Removal Tool - Hanna Instruments

    HI73128 Electrode Removal Tool - Hanna Instruments

    Hanna Instruments

    $29.99
    The HI73128 replacement tool is utilized for electrode removal on select Hanna testers. With a simple twist of the removal tool, the tester electrode can safely and easily be removed and replaced with a new one. pH and conductivity (EC) electrodes...
  • On Sale 15%
    Ammonia Test Kit (40 Tests) - ASF
    On Sale 15%

    Ammonia Test Kit (40 Tests) - ASF

    ASF

    $16.39
    $13.93
    Ammonia test kit for both freshwater and marine aquariums. 40 tests, measures up to 5 mg/L Easy to use, high quality, European-made.
  • On Sale 15%
    GH Liquid Test Kit - Fritz Aquatics
    On Sale 15%

    GH Liquid Test Kit - Fritz Aquatics

    Fritz Aquatics

    $11.24
    $9.55
    East to Read Instructions Essential for a Healthy Tank Accurate in Freshwater About Fritz Liquid Test Kits - GH General hardness (GH) is commonly overlooked in many aquariums, but this parameter plays a very important role in your...
  • On Sale 15%
    Reef Carbonate (250 mL) - Seachem
    On Sale 15%

    Reef Carbonate (250 mL) - Seachem

    Seachem

    $4.75
    $4.04
    Reef Carbonate™ is a concentrated (4,000 meq/L) optimized blend of carbonate and bicarbonate salts designed to restore and maintain alkalinity in the reef aquarium. Calcium and carbonates are essential to all coral growth. If either becomes...
  • On Sale 15%
    Nitrite Liquid Test Kit (Up to 180 Tests) - Fritz Aquatics
    On Sale 15%

    Nitrite Liquid Test Kit (Up to 180 Tests) - Fritz Aquatics

    Fritz Aquatics

    $11.99
    $10.19
    Easy to Read Instructions Essential for New Tank Cycling Works in both Fresh and Saltwater About Fritz Liquid Test Kits - Nitrite Nitrite is produced continually during the ammonia cycle by nitrifying bacteria in the biological filter...
  • Hanna Algae Control PRO Kit (774 ULR Phosphate, 713 Phosphate, 781 LR Nitrate, 782 HR Nitrate) Checker HC (Saltwater) - Hanna Instruments

    Hanna Algae Control PRO Kit (774 ULR Phosphate, 713 Phosphate, 781 LR Nitrate, 782 HR Nitrate) Checker HC (Saltwater) - Hanna Instruments

    Hanna Instruments

    $271.96
    774 CheckerThe HI774 Ultra Low Range Phosphate Checker HC (Handheld Colorimeter) provides a simple, accurate and cost-effective way to measure phosphate in marine systems including reef tanks. Phosphate is an important parameter to measure in aquaculture...
  • On Sale 15%
    pH Test Kit (100 Tests) - ASF
    On Sale 15%

    pH Test Kit (100 Tests) - ASF

    ASF

    $12.39
    $10.53
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. These kits include an easy to read color chart so that the results are clear...
  • On Sale 15%
    Magnesium Test Kit (40 Tests) - ASF
    On Sale 15%

    Magnesium Test Kit (40 Tests) - ASF

    ASF

    $24.19
    $20.56
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. Each kit includes a micro-syringe to ensure accurate testing. Multiple tests are included in...
  • On Sale 15%
    Calcium Test Kit (40 Tests) - ASF
    On Sale 15%

    Calcium Test Kit (40 Tests) - ASF

    ASF

    $21.69
    $18.44
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. Each kit includes a micro-syringe to ensure accurate testing. Multiple tests are included in...
  • On Sale 15%
    Alkalinity KH Test Kit (100 Tests) - ASF
    On Sale 15%

    Alkalinity KH Test Kit (100 Tests) - ASF

    ASF

    $18.89
    $16.06
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. Each kit includes a micro-syringe to ensure accurate testing. Multiple tests are included in...
  • On Sale 15%
    Phosphate Test Kit (40 Tests) - ASF
    On Sale 15%

    Phosphate Test Kit (40 Tests) - ASF

    ASF

    $23.99
    $20.39
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. These kits include an easy to read color chart so that the results are clear. Multiple tests...
  • pHcontrol+e PH Controller - Eheim

    pHcontrol+e PH Controller - Eheim

    EHEIM

    $282.50
    EHEIM pHcontrol+e – the smart controller for monitoring and readjusting the pH value in your aquariumWith the EHEIM pHcontrol+e you can easily monitor and optimize the pH in your aquarium via a smartphone, tablet, or PC/MAC simply via a WiFi...
  • On Sale 15%
    Nitrite Test Kit (100 Tests) - ASF
    On Sale 15%

    Nitrite Test Kit (100 Tests) - ASF

    ASF

    $14.09
    $11.98
    Nitrite test kit for both freshwater and marine aquariums. About 100 tests, measures up to 1 mg/L Easy to use, high quality, European-made.
  • On Sale 15%
    Nitrate Test Kit (40 Tests) - ASF
    On Sale 15%

    Nitrate Test Kit (40 Tests) - ASF

    ASF

    $20.29
    $17.25
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. These kits include an easy to read color chart so that the results are clear...
  • On Sale 15%
    Hardness (GH) Test Kit (40 Tests) - ASF
    On Sale 15%

    Hardness (GH) Test Kit (40 Tests) - ASF

    ASF

    $19.69
    $16.74
    This test kit is designed for both freshwater and saltwater aquariums, ponds, and turtle enclosures. The kit provides fast, easy, and accurate measurements. Each kit includes a micro-syringe to ensure accurate testing. Multiple tests are included in...