hanna instruments

Salinity Meter: Calibration and How to Care for One

Salinity meters, whether hand-held or mounted inside the filter sump, are an easy way to measure salinity in your reef…

How to use a Refractometer to Measure Salinity

A refractometer is considered by many to be a more accurate way to measure salinity. In this article we discuss…

Testing Out the New Hanna PH Checker

I was excited when I heard that Hanna was releasing this new device. Luckily, I was offered a sample Hanna…

Testing Test Kits: We Compared 5 Popular Aquarium pH Test Kits—Here Are the Results

For our test kit evaluation, we used a “blind” test panel of three persons. We knew what the pH levels…

Salinity Measurements in Aquariums

Salinity is one of the most widely tested parameters in saltwater aquariums. It is often the first parameter hobbyists test…

Does Your TDS Meter Measure Up?

A healthy aquarium begins with quality water. In this guest post from Kevin Costa of Hanna Instruments, we will dive…

How to Safely Medicate Sick Fish By Testing Copper Levels With The Hanna Copper Colorimeter Checker – Marine Depot Chats with Experts #1

Thinking of setting up a quarantine tank? We quiz Kevin Costa of Hanna Instruments about the technology that went into…

Hanna Alkalinity Checkers: What YOU Need To Know

Measuring alkalinity and maintaining it at the proper levels helps corals thrive. The Hanna Alkalinity Checker makes testing easy and…

Hanna Calcium Checker: What YOU Need To Know

If you are tired of hassling with liquid test kits and want a quick, easy, and accurate way to monitor…

Hanna Phosphate Checkers: What YOU Need to Know

Hanna Phosphate and Phosphorous ULR Checkers offer fast, easy, and ultra-precise water testing if you’re having algae problems and want…