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  1. NutraFin Test Iron Reagent Refill #2

    NutraFin
    Reagent Refill for Iron Test Kit - #2

    $4.99
    Water Test Kits Test Kits- Refills. NutraFin Iron Reagent Refill. NutraFin test kits are reliable, accurate and easy to use. Monitor your aquarium water regularly to help prevent instability in your aquarium. Learn More
  2. Tropic Marin Magnesium/Calcium Combo-Test Kit

    Tropic Marin
    Magnesium/Calcium Combo Test Kit

    $29.99
    A periodic check of magnesium and calcium concentrations is necessary to determine the amounts of these elements that needs to be added to the aquarium in order to restore them to natural seawater levels. Learn More
  3. Reef Status Test Kit - Magnesium / Carbonate / Borate

    Seachem
    Reef Status Test Kit - Magnesium/Carbonate/Borate - 150 Tests

    $34.86
    Four kits in one! Tests for magnesium through a titration based procedure in increments of 12.5 mg/L. Tests for carbonate alkalinity, borate alkalintiy and total alkalinity in 0.1 meq/L resolution through a titration based procedure. Learn More
  4. Reef Status Test Kit - Calcium

    Seachem
    Reef Status Test Kit - Calcium - 150 Tests

    $28.19
    This kit measures all types of calcium, including gluconate calcium. The method is based on specific titration with a unique indicator. Measures in increments of 5 mg/L. Each kit runs 150 tests. Learn More
  5. Multi Test Phosphate

    Seachem
    MultiTest - Phosphate - 75+ Tests

    $12.78
    This kit measures inorganic phosphate to less than 0.05 mg/L, producing a unique easy to read yellow-green-blue color range in marine and freshwater. MultiTest™ Phosphate performs over 75 tests and contains a reference sample for validation. Learn More
  6. Multi Test Nitrite/Nitrate

    Seachem
    MultiTest - Nitrite/Nitrate - 75+ Tests

    $12.78
    This kit measures nitrite to less than 0.1 mg/L and nitrate to less than 0.2 mg/L in marine or freshwater. MultiTest™ Nitrite. Nitrate performs over 75 tests and contains a reference sample for validation. Learn More

    Out of stock

  7. Multi Test Marine pH/Alkalinity

    Seachem
    MultiTest - Marine pH/Alkalinity - 75 Tests

    $12.78
    This test kit features a unique dye that has a pronounced color change between 8.0 and 8.3, making it the easiest kit on the market to read in that critical range. Alkalinity may be read from the same sample in 0.5 meq/L increments. Learn More
  8. Multi Test Iron

    Seachem
    MultiTest - Iron - 75+ Tests

    $12.78
    This kit measures iron in freshwater or marine water to less than 0.05 mg/L. Can also measure chelated iron. MultiTest™ Iron performs over 75 tests and contains a reference sample for validation. Learn More
  9. Multi Test Iodine/Iodide

    Seachem
    MultiTest - Iodine/Iodide - 75+ Tests

    $12.78
    This kit measures iodine or iodide to less than 0.005 mg/L. MultiTest™Iodine/Iodide performs over 75 tests and contains a reference sample for validation. Learn More
  10. Multi Test Copper

    Seachem
    MultiTest - Copper - 75 Tests

    $12.78
    This kit measures copper (all types) to less than 0.01 mg/L in marine or freshwater. Uses a highly sensitive catalysis based procedure. MultiTest™ Copper performs over 75 tests and contains a reference sample for validation. Learn More

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