Salinity meters, whether hand-held or mounted inside the filter sump, are an easy way to measure salinity in your reef aquarium. Here’s what you need to know about a salinity probe and meter, their calibration and how to care for one.

A refractometer is considered by many to be a more accurate way to measure salinity. In this article we discuss what they are, how to use and calibrate them, with some extra useful tips.

I was excited when I heard that Hanna was releasing this new device. Luckily, I was offered a sample Hanna Marine pH checker HC to take home and had fun using it with my 29 gallon reef aquarium.

For our test kit evaluation, we used a “blind” test panel of three persons. We knew what the pH levels were in the water samples, but the observers didn’t. They simply performed the tests and wrote down the results.

Salinity is one of the most widely tested parameters in saltwater aquariums. It is often the first parameter hobbyists test for as it is crucial in making artificial saltwater. As Kevin Costa from Hanna Instruments explains, there are many ways to measure salinity—but some are more accurate than others!

A healthy aquarium begins with quality water. In this guest post from Kevin Costa of Hanna Instruments, we will dive deeper into understanding Total Dissolved Solids and Electrical Conductivity Measurements and the impact that these measurements can have on your RODI filters and your aquarium.

Thinking of setting up a quarantine tank? We quiz Kevin Costa of Hanna Instruments about the technology that went into building the Copper Checker and how you can use it to monitor your quarantine so you don’t overdose or under medicate fish.

Measuring alkalinity and maintaining it at the proper levels helps corals thrive. The Hanna Alkalinity Checker makes testing easy and provides an easy to understand digital readout.

If you are tired of hassling with liquid test kits and want a quick, easy, and accurate way to monitor your calcium levels, the Hanna Instruments Calcium Checker is your best option.

Hanna Phosphate and Phosphorous ULR Checkers offer fast, easy, and ultra-precise water testing if you’re having algae problems and want to get your phosphate level in check.