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  • 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...
  • Calcium Marine Test Kit - Red Sea

    Calcium Marine Test Kit - Red Sea

    Red Sea

    $26.99
    Calcium Test Kit Accurate measurement of Calcium in marine aquariums Ca Red Sea’s user-friendly Calcium titration test provides a quick and reliable measurement of calcium in your aquarium to an accuracy of either 15ppm or 30ppm according to...
  • 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 (Mg) Test Kit - Elos

    Magnesium (Mg) Test Kit - Elos

    ELOS

    $25.99
    Mg Magnesium Water Analysis for AquariumMagnesium is a major salt in natural seawater. Contrary to its significance this element was ignored for a long time. We know today that Magnesium creates a remarkable improvement in the growth of calcareous algae...
  • Nitrate (NO3) Test Kit - Elos

    Nitrate (NO3) Test Kit - Elos

    ELOS

    $25.99
    Biological filtration is a method that uses naturally occurring nitrifying bacteria to detoxify nitrogenous wastes. One type of bacteria (Nitrosomonas spp.) converts ammonia to nitrite while another naturally occurring bacteria (Nitrobacter spp.)...
  • 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...
  • Pinpoint Wireless Thermometer - American Marine

    Pinpoint Wireless Thermometer - American Marine

    American Marine

    $24.99
    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...
  • Calcium Pro Test Refill - Red Sea

    Calcium Pro Test Refill - Red Sea

    Red Sea

    $24.99
    Refill contains all reagents used in the Red Sea calcium test kitCalcium, an essential component in the building of coral skeletons, is constantly depleted from the aquarium and needs to be monitored on a regular basis. Calcium Pro is an advanced calcium...
  • Magnesium Pro Test Refill - Red Sea

    Magnesium Pro Test Refill - Red Sea

    Red Sea

    $24.99
    Red Sea’s Magnesium Pro Test Kit is an advanced titration test, measuring the level of magnesium in your reef aquarium to an exceptionally high accuracy of 20 ppm. The Magnesium Pro Test test kit enables the accurate dosing of Red Sea’s...
  • KH/Alkalinity Pro Test Refill - Red Sea

    KH/Alkalinity Pro Test Refill - Red Sea

    Red Sea

    $24.99
    Reagent alkalinity pro refill test kit is an advanced titration test Measuring the level of buffers in reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dkh) This test refill replenishes KH/alkalinity pro test kit with sufficient...
  • Phosphate (PO4) Reefer Test Kit 50 Tests - NYOS Aquatics

    Phosphate (PO4) Reefer Test Kit 50 Tests - NYOS Aquatics

    NYOS

    $24.99
    PHOSPHATE 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...
  • 5-IN-1 Test Strips (100 CT) pH, N03, N02, KH, GH - API

    5-IN-1 Test Strips (100 CT) pH, N03, N02, KH, GH - API

    API

    $24.98
    API® 5-in-1 Aquarium Test Strips are the quick and easy way to test the 5 most important water parameters – pH, KH, GH, nitrate, and nitrite – in one easy step. Simply dip one test strip directly into the aquarium, and compare the colors...
  • Magnesium Test Kit (40 Tests) - ASF

    Magnesium Test Kit (40 Tests) - ASF

    ASF

    $24.19
    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...
  • Phosphate Test Kit (40 Tests) - ASF

    Phosphate Test Kit (40 Tests) - ASF

    ASF

    $23.99
    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...
  • Ammonia Marine Test Kit - Red Sea

    Ammonia Marine Test Kit - Red Sea

    Red Sea

    $23.99
    Accurately measure the ammonia (NH3/NH4) in your saltwater aquarium with the advanced colorimetric test from Red Sea. 100 NH3/NH4 tests Accuracy: .2 ppm Range: 0-2 ppm Test Type: Colorimetric
  • pH/Alkalinity Marine Test Kit - Red Sea

    pH/Alkalinity Marine Test Kit - Red Sea

    Red Sea

    $23.99
    Easily and accurately test the pH and Alkalinity in your saltwater aquarium with the Red Sea pH/Alkalinity Test Kit. Maintaining proper alkalinity and pH in your reef tank is key to a successful reef tank.   Each kit includes: 100 pH...
  • Ammonia/Ammonium (NH3/4) Test Kit - Elos

    Ammonia/Ammonium (NH3/4) Test Kit - Elos

    ELOS

    $23.99
    Ammonia (NH3) is toxic to corals, invertebrate and fishes. At high pH level (as in a marine aquarium) and at increased temperatures, NH3 can kill the aquarium inhabitants. In freshwater aquaria its optimal level should be below 0,1 mg/lt. In marine...
  • Reef Buffer (1KG) - Seachem

    Reef Buffer (1KG) - Seachem

    Seachem

    $23.16
    Reef Buffer™ will also raise carbonate alkalinity; however, it is intended primarily for use as a buffer in a reef system where the maintenance of a pH of 8.3 is often difficult. When pH is not an issue, Reef Builder™ or Reef Carbonate™...
  • Marine Buffer (1 KG) - Seachem

    Marine Buffer (1 KG) - Seachem

    Seachem

    $23.16
    Raises and maintains pH at 8.3 in all saltwater aquariums Can be used safely in reef tanks Contains borate for added stability Contains magnesium to alleviate precipitation effects Marine Buffer® will safely raise marine pH to 8.3. It will...
  • HI73128 Electrode Removal Tool - Hanna Instruments

    HI73128 Electrode Removal Tool - Hanna Instruments

    Hanna Instruments

    $23.00
    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...
  • Phosphate (PO4) Test Kit - Elos

    Phosphate (PO4) Test Kit - Elos

    ELOS

    $22.99
    Phosphate Water Analysis for Fresh Water or Marine AquariumsPhosphate build up in the tank appears to be a fairly common problem in fresh water and in marine aquariums. They are present in most tap water supplies, they are also introduced to aquarium...
  • Pocket Size TDS & Temperature Meter (TDS-4TMA) - HM Digital

    Pocket Size TDS & Temperature Meter (TDS-4TMA) - HM Digital

    HM Digital

    $22.45
    The TDS-4TMA handheld meter is ideal for testing TDS and salt levels of freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, such as RO and DI, to know when to changes filters and membranes...
  • pH600 pH Economical Pocket Tester - Milwaukee

    pH600 pH Economical Pocket Tester - Milwaukee

    Milwaukee Instruments

    $22.00
    Milwaukee's economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the best way of checking the amount of salt or dissolved solids (TDS) in water. Milwaukee...
  • 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...
  • Copper (Cu) Test Kit - Elos

    Copper (Cu) Test Kit - Elos

    ELOS

    $21.99
    The ELOS Copper Test Kit combines ease-of-use, with laboratory-grade precision. It can be used to detect copper or to measure residual copper levels before and after using copper cures in fish-only aquariums. Also, great for testing tap or source water...
  • Nitrite (NO2) Test Kit - Elos

    Nitrite (NO2) Test Kit - Elos

    ELOS

    $21.99
    Biological filtration is a method that uses naturally occurring nitrifying bacteria to detoxify nitrogenous wastes. One type of bacteria (Nitrosomonas spp.) converts ammonia to nitrite while another naturally occurring bacteria (Nitrobacter spp.)...
  • Calcium Test Kit (40 Tests) - ASF

    Calcium Test Kit (40 Tests) - ASF

    ASF

    $21.69
    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...
  • HI1271 Replacement Spare pH Electrode for HI98100 - Hanna Instruments

    HI1271 Replacement Spare pH Electrode for HI98100 - Hanna Instruments

    Hanna Instruments

    $21.00
    The HI1271 is the replacement pH electrode for the HI98100, HI98103, and HI98115 Checker pH meters. The HI1271 is a single junction pH electrode that has a slim 8 mm polypropylene body that easily fits into test tube and other small sized vessels...
  • PhosBond (500 mL) - Seachem

    PhosBond (500 mL) - Seachem

    Seachem

    $20.93
    PhosBond™ is a revolutionary new product that combines the phosphate removing capabilities of both aluminum oxide and granular ferric oxide into a singular material forming a synergistic effect. It rapidly removes phosphates and silicates from...
  • Nitrate Test Kit (40 Tests) - ASF

    Nitrate Test Kit (40 Tests) - ASF

    ASF

    $20.29
    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...
  • HI784-25 Marine Ammonia HC Checker Reagents (25 tests) - Hanna Instruments

    HI784-25 Marine Ammonia HC Checker Reagents (25 tests) - Hanna Instruments

    Hanna Instruments

    $20.00
    HI784-25 Marine Ammonia Checker HC (Handheld Colorimeter) Reagents are high-quality reagents for use with the HI784 Marine Ammonia (ppm) Checker HC. Reagents are clearly marked with the lot number and expiration date on each packet for traceability...