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Water Testing

Aquarium Supplies

Water Test Kits

Using test kits to detect problematic water conditions is key to the sustainability of a healthy aquarium. For a fish-only tank, you should measure and monitor pH, alkalinity, ammonia, nitrite, and nitrate levels. In addition to these, you should also monitor the calcium, magnesium and strontium levels in a reef aquarium.

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  1. Milwaukee Seawater Digital Refractometer with Protective Hardshell Case

    Milwaukee Seawater Digital Refractometer with Protective Hardshell Case

    Milwaukee Seawater Digital Refractometer with Protective Hardshell Case The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing ...
    ON SALE

    Was: $146.00

    $117.59

  2. Milwaukee Seawater Digital Refractometer

    Milwaukee Seawater Digital Refractometer

    The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each scale is temperature compensated. 1...
    ONLY
    $114.45
  3. Milwaukee Instruments Protective Hardshell Case for Refractometers & Photometers

    Milwaukee Instruments Protective Hardshell Case for Refractometers & Photometers

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    Milwaukee Protective Hardshell Case for Milwaukee Refractometers and Photometers
    ONLY
    $22.99

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