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  1. pH Probe Calibration and How to Care for One

    pH Probe Calibration and How to Care for One

    Electronic pH measurement of aquarium water used to be something only a laboratory could perform. Thanks to advancements in technology, the cost of high-quality pH meters has come down to an...
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  2. Salinity Meter: Calibration and How to Care for One

    Salinity Meter: Calibration and How to Care for One

    Hanna Instruments Salinity Tester (HI98319), Apex Salinity Probe / Lab Grade Conductivity Probe and IceCap Salinity/Temperature Digital Pocket Tester In a previous article we explained how to use a...
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  3. How to use a Refractometer to Measure Salinity

    How to use a Refractometer to Measure Salinity

    In the early days of the hobby, we’d use a floating glass hydrometer to measure the specific gravity in our tanks and when mixing up saltwater. The strength of the seawater determines how high...
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  4. Types of Test Kits: Which one is Right for You?

    Types of Test Kits: Which one is Right for You?

    Testing your aquarium is one of the fundamental practices required to maintain a stable aquatic environment. Water testing allows you to see how well your aquarium is functioning. New aquarists often...
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  5. Testing Out the New Hanna PH Checker

    Testing Out the New Hanna PH Checker

    It has been a long time since Hanna released a new device that can be used by those of us in the Saltwater Aquarium community, but Hanna has announced a new Hanna Marine pH Checker HC (Handheld...
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  6. The NEW Hanna pH Checker: pH Testing Made Easy!

    The NEW Hanna pH Checker: pH Testing Made Easy!

    Its almost here! Matthew got his hands on one of the new pH Checker Colorimeters from Hanna Instruments. Watch as he puts it through his pH testing gauntlet. Subscribe to Newsletters...
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  7. Hanna announce long-awaited Low Range Marine Nitrate tester

    Hanna announce long-awaited Low Range Marine Nitrate tester

    At last, the one we’ve all been waiting for, the Marine Nitrate Low Range Handheld Colorimeter from Hanna Instruments is finally here. One of the last pieces in the Hanna Marine Line puzzle,...
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  8. Salinity Measurements in Aquariums

    Salinity Measurements in Aquariums

    Salinity is one of the most widely tested parameters in saltwater aquariums. It is often the first water parameter many aquarists test for as it is crucial in making artificial saltwater. There are...
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