How Does A Refractometer Work And How Do You Use One

In a saltwater aquarium stability is one of the aquarists prime concerns and numerous devices are uses to measure various aspects of the aquarium.

One of the aspects which aquarists measure is salinity/specific gravity – ie the amount of salt in the water.

Hydrometers are very good at this task, however over time and especially if maintenance is neglected they can become troublesome. [Read more]