CONTROL & TESTING (387)
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  • Hanna HI782-25 Nitrate High Range Reagents
    $24.99
    No reviews

      Hanna HI782-25 Nitrate High Range Reagents

  • Hanna Instruments Alkalinity (dKH) Checker Reagents
    $17.99
    No reviews

    The HI772-26 are the replacement reagents Marine Alkalinity (dKH) Checker® HC - HI772. These high-quality reagents are manufactured in our...

  • Salifert Kh/alk Aquarium Test Kit
    $16.46
    No reviews

    Alkalinity testing and addition Calcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some...

  • Salifert Calcium Aquarium Test Kit
    $18.81
    No reviews

    Calcium testing and addition Calcium is a major constituent of calcareous algae, skeletal material of hard corals and the skeletal...

  • Hanna Ultra Low Range Phosphate Checker reagents
    $17.99
    No reviews

    The HI774-25 are the replacement reagents for the HI774 Phosphate Ultra Low Range Checker® HC. These high-quality reagents are manufactured...

  • Salifert Magnesium Aquarium Test Kit
    $19.61
    No reviews

    Magnesium is present in NSW in a fairly high concentration (1300 - 1400 mg/L). Magnesium is an essential part of...

  • Salifert Nitrate Aquarium Test Kit
    $17.37
    No reviews

    Nitrate testing When an aquarium has insufficient regions deprived of oxygen (= anaerobic zones) or denitrification proceeds incompletely then nitrate...

  • Hanna Checker Phosphorous ULR 736-25 reagents (25)
    $17.99
    No reviews

    The HI736-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Phosphorus...

  • American Marine PINPOINT Lab pH Probe
    $39.99
    No reviews

    PINPOINT pH Replacement Probe, Lab Grade, Double Junction:   10 foot cord, Ag-Ag/Cl reference, extended life, high supression cable jacket. Can...

  • Apogee Neoprene Protective Pouch - "Made in USA"
    $2.99 $20.00
    No reviews

    This 5" x 8" x 1" zippered neoprene pouch is great for safely storing Apogee meters, microCache devices, and sensors....

  • Salifert Phosphate Aquarium Test Kit
    $19.61
    No reviews

    Phosphate testing and removal Phosphate has several negative effects if present in a too high concentration. First of all undesirable...

  • Milwaukee Digitial Seawater Refractometer
    $152.00
    No reviews

      PSU PPT S.G. (20/20) Celsius (Fahrenheit) Range: 0 to 50 0 to 150 1.000 to 1.114 0 to 80C...