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Hydrometers & Refractometers

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  1. Deluxe Salinity Refractometer with ATC

    Deluxe Salinity Refractometer with ATC

    $49.95

    Reward Points Policy 499 AQUAPOINTS
    hydrometers are not precise enough to measure salinity when very specific conditions must be maintained, such as when maintaining delicate coral and invertebrates or in some breeding situations... Learn More
  2. Red Sea Seawater Refractometer, High Accuracy

    Red Sea Seawater Refractometer, High Accuracy

    $59.95

    Reward Points Policy 599 AQUAPOINTS

    Red Sea Seawater Refractometer (Reef Spec) High Accuracy

    Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl - rather than seawater) and at a temperature of 15oC/59 0F rather than 25oC/77 0F. Thus, a measurement deviation of up to 1.5ppt is possible, which can have a significant adverse effect on coral growth and coloration.

    Learn More
  3. Aqua Medic Salinity Refractometer with ATC

    Aqua Medic Salinity Refractometer with ATC

    $94.95

    Reward Points Policy 949 AQUAPOINTS
    Having an accurate measure of an aquariums salinity or specific gravity is essential to every marine enthusiast. Our Refractometer is the fastest, easiest, and most accurate way to know. Learn More
  4. Sybon Salinity Refractometer with ATC

    Sybon Salinity Refractometer with ATC

    $59.95

    Reward Points Policy 599 AQUAPOINTS
    Sybon SalinityRefractometer with ATCydrometers are not precise enough to measure salinity when very specific conditions must be maintained, such as when maintaining delicate coral and invertebrates or in some breeding situations... Learn More
  5. Milwaukee MA887 Digital Refractometer

    Milwaukee MA887 Digital Refractometer

    $109.95

    Reward Points Policy 1,099 AQUAPOINTS
    Milwaukee MA887 Digital Refractometer Learn More
  6. Milwaukee MA887 Digital Saltwater Refractometer with Case

    Milwaukee MA887 Digital Saltwater Refractometer with Case

    $119.95

    Reward Points Policy 1,299 AQUAPOINTS
    Milwaukee MA887 Digital Saltwater Refractometer with Case Learn More
  7. Pinpoint Salinity Monitor by American Marine

    Pinpoint Salinity Monitor by American Marine

    $119.95

    Reward Points Policy 1,199 AQUAPOINTS
    PINPOINT Salinity Monitor will accurately and immediately measure the amount of salt in any marine or freshwater system.
    The reading is fully temperature compensated, which is difficult or impossible with nearly any commercial hydrometer. Learn More
  8. Red Sea Hydrometer With Thermometer

    Red Sea Hydrometer With Thermometer

    $10.95

    Reward Points Policy 109 AQUAPOINTS
    Red Sea HydrometerWith Thermometer.

    Unique integrated hydrometer and thermometer. Provides accurate measurement of specific gravity (degree of salinity) in a saltwater aquarium.
    Patented design enables device to be Learn More
  9. Fluval Sea Hydrometer

    Fluval Sea Hydrometer

    $7.95

    Reward Points Policy 79 AQUAPOINTS
    Fluval Sea Hydrometer

    Unique integrated hydrometer and thermometer. Provides accurate measurement of specific gravity (degree of salinity) in a saltwater aquarium.
    Patented design enables device to be Learn More
  10. 5 ml. Transfer Pipette

    5 ml. Transfer Pipette

    $0.49

    Reward Points Policy 4 AQUAPOINTS
    5 ml. Transfer PipetteUnbreakable all-in-one pipets eliminate the hazards of broken glass and exposure to infectious materials. Put an end to matching rubber bulb with glass pipet. Learn More
  11. Salinity Calibration Fluid 53.0mS / 1.026 SG, 2 oz. 60ml. by Aqua Craft Products

    Salinity Calibration Fluid 53.0mS / 1.026 SG, 2 oz. 60ml. by Aqua Craft Products

    $7.95

    Reward Points Policy 79 AQUAPOINTS
    Salinity Calibration Fluid53.0mS / 1.026 SG Learn More
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