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  • Hanna Calcium Reagent (25 Tests) HI758-26| Hanna Instruments

    Hanna Instruments
    Original price $27.99 - Original price $27.99
    Original price
    $27.99
    $27.99 - $27.99
    Current price $27.99
    Low stock

    Extreme Accuracy. Easy to Test in 4 Steps - Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered...

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    Original price $27.99 - Original price $27.99
    Original price
    $27.99
    $27.99 - $27.99
    Current price $27.99
  • Hanna Nitrate HR Reagent (25 Tests) HI782-25 | Hanna Instruments

    Hanna Instruments
    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
    Low stock

    The HI782-25 are the replacement reagents for the HI782 Marine Nitrate High Range Checker® HC. These high-quality reagents are manufactured in ou...

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    Original price $16.99 - Original price $16.99
    Original price
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • HI736-25 Phosphorus Checker Reagent (25 Tests) | Hanna Instruments

    Hanna Instruments
    Original price $13.99 - Original price $13.99
    Original price
    $13.99
    $13.99 - $13.99
    Current price $13.99
    Low stock

    The HI736-25 are the replacement reagents for the HI736 Phosphorus Ultra Low Range Checker® HC. These high-quality reagents are manufactured in our...

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    Original price $13.99 - Original price $13.99
    Original price
    $13.99
    $13.99 - $13.99
    Current price $13.99
  • Phosphate Pro Test Kit (PO4) - 100 Tests - Red Sea

    Red Sea
    Original price $45.99 - Original price $45.99
    Original price
    $45.99
    $45.99 - $45.99
    Current price $45.99
    Low stock

    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 exc...

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    Original price $45.99 - Original price $45.99
    Original price
    $45.99
    $45.99 - $45.99
    Current price $45.99
  • Nitrate Pro Test Kit (NO3) - 100 Tests - Red Sea

    Red Sea
    Original price $50.99 - Original price $50.99
    Original price
    $50.99
    $50.99 - $50.99
    Current price $50.99
    Low stock

    Red Sea’s Nitrate Pro Test Kit is an advanced colorimetric test with comparator, measuring the level of nitrate in your reef aquarium to an except...

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    Original price $50.99 - Original price $50.99
    Original price
    $50.99
    $50.99 - $50.99
    Current price $50.99
  • Magnesium Pro Test Kit (Mg) - 100 Tests - Red Sea

    Red Sea
    Original price $38.99 - Original price $38.99
    Original price
    $38.99
    $38.99 - $38.99
    Current price $38.99
    Low stock

    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 acc...

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    Original price $38.99 - Original price $38.99
    Original price
    $38.99
    $38.99 - $38.99
    Current price $38.99
  • Phosphate Pro Test Kit (PO4) Refill - 100 Tests - Red Sea

    Red Sea
    Original price $28.99 - Original price $28.99
    Original price
    $28.99
    $28.99 - $28.99
    Current price $28.99
    Low stock

    **This is a refill for Phosphate Pro Test Kit Red Sea’s Phosphate Pro Test Kit is an advanced colorimetric test with comparator, measuring the leve...

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    Original price $28.99 - Original price $28.99
    Original price
    $28.99
    $28.99 - $28.99
    Current price $28.99
  • DiST®1 Waterproof TDS Tester (0-2000 ppm)

    Hanna Instruments
    Original price $55.00 - Original price $55.00
    Original price
    $55.00
    $55.00 - $55.00
    Current price $55.00
    Low stock

    The Hanna Instruments HI98301 DiST® 1 is a low-range total dissolved solids tester than can measure up to 2000 ppm (mg/L). The DiST® 1 is a rugged...

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    Original price $55.00 - Original price $55.00
    Original price
    $55.00
    $55.00 - $55.00
    Current price $55.00
  • Copper Test Kit | Seachem

    Salifert
    Original price $16.99 - Original price $16.99
    Original price $16.99
    $16.99
    $16.99 - $16.99
    Current price $16.99
    Low stock

    Copper kits are usually of two types: compleximetric or titration based. Some kits measure only ionic copper and others measure both ionic and che...

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    Original price $16.99 - Original price $16.99
    Original price $16.99
    $16.99
    $16.99 - $16.99
    Current price $16.99
  • Cupramine | Copper Parasite Treatment 250ml | Seachem

    SeaChem
    Original price $17.99 - Original price $17.99
    Original price
    $17.99
    $17.99 - $17.99
    Current price $17.99
    Low stock

    Cupramine™ effectively eradicates Oodinium, Cryptocaryon, Amyloodinium, Ichthyophthirius, and other ectoparasites of both freshwater and marine f...

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    Original price $17.99 - Original price $17.99
    Original price
    $17.99
    $17.99 - $17.99
    Current price $17.99
  • Potassium | Test Kit | Salifert

    Salifert
    Original price $16.99 - Original price $16.99
    Original price $16.99
    $16.99
    $16.99 - $16.99
    Current price $16.99
    Low stock

    Salifert test kits have been trusted by discerning reefers for years for their ease of use and reliability.  Many reefers will report loss of colo...

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    Original price $16.99 - Original price $16.99
    Original price $16.99
    $16.99
    $16.99 - $16.99
    Current price $16.99