The concentration of salt in seawater, known as Salinity, is the single most important factor to having a successful saltwater aquarium. Therefore, we welcome any device that makes reliable and accurate testing of salt concentration any easier, such as the…
Hanna Instruments digital refractometer, compensates for reef aquarium temperature
The new digital refractometer from Hanna Instruments is one svelte and highly accurate new electronic machine for testing the salinity of seawater. The $200 device is bileld as scientific and research grade: it may be overkill for many hobbyists but…
