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0% Financing with Affirm For Qualified Buyers

0% Financing with Affirm For Qualified Buyers

Aperture Business New Website Reminder

We are now transitioning all ordering of Neptune Systems, EcoTech Marine, AquaIllumination, Bulk Reef Supply Wholesale, and all of our Aperture Exclusive Distribution Brands to the new Aperture Business website (aperturebusiness.com).

If we have not yet moved your account, we need your basic information to complete that transition.

Please Complete This Form

Please complete the form linked above as soon as possible to get started.

If you have any questions, please contact your Aperture sales representative.

Marine Water Hanna Checkers

Hanna Instruments saltwater testing colorimeters are easy to use and easy to read with a clear digital display. They have a wide range of checkers that can test your saltwater aquarium for alkalinity, calcium, phosphate, phosphorus, ammonia, and much more!

Review and Win
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35 Items

  1. HIREEF2 Professional Reef Test Kit
    3 Reviews
    Hanna Instruments
    HIREEF2 Professional Reef Test Kit
    $329.99 $329.99

  2. Alkalinity DKH Colorimeter HI772 Hanna Checker - Marine Water
    116 Reviews
    Hanna Instruments
    Alkalinity DKH Colorimeter HI772 Hanna Checker - Marine Water
    $74.99 $74.99

  3. Calcium Colorimeter HI758 Hanna Checker - Marine Water
    164 Reviews
    Hanna Instruments
    Calcium Colorimeter HI758 Hanna Checker - Marine Water
    $74.99 $74.99

  4. Marine Magnesium Colorimeter HI783
    18 Reviews
    Hanna Instruments
    Marine Magnesium Colorimeter HI783
    $74.99 $74.99

  5. Nitrate High Range Colorimeter HI782 - Marine Water
    37 Reviews
    Hanna Instruments
    Nitrate High Range Colorimeter HI782 - Marine Water
    $74.99 $74.99

  6. Phosphate Ultra Low Range PPM Colorimeter HI774 Hanna Checker - Marine Water
    32 Reviews
    Hanna Instruments
    Phosphate Ultra Low Range PPM Colorimeter HI774 Hanna Checker - Marine Water
    $74.99 $74.99

  7. Marine Master Bluetooth Multiparameter Photometer HI97115
    10 Reviews
    Hanna Instruments
    Marine Master Bluetooth Multiparameter Photometer HI97115
    $499.99 $499.99

  8. Marine Monitor (pH/Salinity/Temperature)
    8 Reviews
    Hanna Instruments
    Marine Monitor (pH/Salinity/Temperature)
    $299.99 $299.99

  9. HI98319 Marine Salinity Tester
    68 Reviews
    Hanna Instruments
    HI98319 Marine Salinity Tester
    $99.99 $99.99

  10. 25-Pack HI70024P 35ppt Salinity Calibration Sachet
    5 Reviews
    Hanna Instruments
    25-Pack HI70024P 35ppt Salinity Calibration Sachet
    $39.99 $39.99

    View Details
  11. HI772-26 Alkalinity Checker Reagents - Hanna
    36 Reviews
    Hanna Instruments
    HI772-26 Alkalinity Checker Reagents - Hanna
    $18.99 $18.99

  12. HI774-25 Phosphate ULR Reagents - Marine Water
    7 Reviews
    Hanna Instruments
    HI774-25 Phosphate ULR Reagents - Marine Water
    $18.99 $18.99

  13. HI758-26 Calcium Checker Reagents - Marine Water
    21 Reviews
    Hanna Instruments
    HI758-26 Calcium Checker Reagents - Marine Water
    $34.99 $34.99

  14. Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    2 Reviews
    Hanna Instruments
    Low Range pH/Conductivity/TDS Combo Pen HI98129 - Hanna
    $224.99 $224.99

  15. HI98108 Waterproof pHep+ Pocket Tester
    3 Reviews
    Hanna Instruments
    HI98108 Waterproof pHep+ Pocket Tester
    $79.99 $79.99

  16. Marine pH Colorimeter HI780 Hanna Checker
    12 Reviews
    Hanna Instruments
    Marine pH Colorimeter HI780 Hanna Checker
    $74.99 $74.99

  17. Marine Ammonia Colorimeter HI784
    6 Reviews
    Hanna Instruments
    Marine Ammonia Colorimeter HI784
    $74.99 $74.99

  18. Phosphorus Ultra Low Range Colorimeter HI736 Hanna Checker - Marine Water
    41 Reviews
    Hanna Instruments
    Phosphorus Ultra Low Range Colorimeter HI736 Hanna Checker - Marine Water
    $74.99 $74.99

  19. Alkalinity PPM Colorimeter HI755 Hanna Checker - Marine Water
    172 Reviews
    Hanna Instruments
    Alkalinity PPM Colorimeter HI755 Hanna Checker - Marine Water
    $74.99 $74.99

  20. Copper High Range Colorimeter HI702 Hanna Checker
    9 Reviews
    Hanna Instruments
    Copper High Range Colorimeter HI702 Hanna Checker
    $74.99 $74.99

  21. Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker - Marine Water
    10 Reviews
    Hanna Instruments
    Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker - Marine Water
    $74.99 $74.99

  22. Phosphate Low Range Colorimeter HI713 Hanna Checker - Fresh & Marine Water
    260 Reviews
    Hanna Instruments
    Phosphate Low Range Colorimeter HI713 Hanna Checker - Fresh & Marine Water
    $74.99 $74.99

  23. HI731339P Graduated Pipette
    3 Reviews
    Hanna Instruments
    HI731339P Graduated Pipette
    $32.99 $32.99

  24. HI702-25 Copper High Range Reagents (25 Pack)
    2 Reviews
    Hanna Instruments
    HI702-25 Copper High Range Reagents (25 Pack)
    $18.99 $18.99

  25. HI713-25 Phosphate Checker Reagents - Marine & Fresh Water
    62 Reviews
    Hanna Instruments
    HI713-25 Phosphate Checker Reagents - Marine & Fresh Water
    $18.99 $18.99

  26. HI736-25 Phosphorus ULR Reagents - Marine Water
    15 Reviews
    Hanna Instruments
    HI736-25 Phosphorus ULR Reagents - Marine Water
    $18.99 $18.99

  27. HI764-25 Nitrite ULR Reagents for HI764 Checker - Marine Water
    3 Reviews
    Hanna Instruments
    HI764-25 Nitrite ULR Reagents for HI764 Checker - Marine Water
    $18.99 $18.99

  28. HI774-11 ULR Phosphate Standards for HI774 Hanna Checker
    1 Review
    Hanna Instruments
    HI774-11 ULR Phosphate Standards for HI774 Hanna Checker
    $18.99 $18.99

  29. HI782-25 Nitrate HR Checker Reagents - Hanna
    8 Reviews
    Hanna Instruments
    HI782-25 Nitrate HR Checker Reagents - Hanna
    $26.99 $26.99

  30. HI755-11 Marine Alkalinity Calibration Check Set for HI755 Checker
    7 Reviews
    Hanna Instruments
    HI755-11 Marine Alkalinity Calibration Check Set for HI755 Checker
    $18.99 $18.99

  31. HI758-11 Marine Calcium Calibration Check Set for HI758 Checker
    4 Reviews
    Hanna Instruments
    HI758-11 Marine Calcium Calibration Check Set for HI758 Checker
    $25.99 $25.99

  32. HI736-11 Phosphorus Calibration Check Set for HI736 Checker
    1 Review
    Hanna Instruments
    HI736-11 Phosphorus Calibration Check Set for HI736 Checker
    $18.99 $18.99

  33. HI780-25 Marine pH Checker HC Reagents (100 Tests)
    Hanna Instruments
    HI780-25 Marine pH Checker HC Reagents (100 Tests)
    $24.99 $24.99

  34. Marine Coral Care Test Kit
    Hanna Instruments
    Marine Coral Care Test Kit
    $194.99 $194.99

  35. Marine Algae & Nutrient Management Test Kit
    Hanna Instruments
    Marine Algae & Nutrient Management Test Kit
    $169.99 $169.99