D-D H20cean Refractometer

D-D H2Ocean Refractometer

The D-D H2Ocean Refractometer is a precision optical tool designed to measure the salinity of aquarium water with accuracy and ease. Salinity is a critical parameter in both marine and reef systems, and this analog refractometer allows hobbyists to quickly check salt levels to ensure they remain within the ideal range for fish, corals, and invertebrates.

This handheld unit features a clear, easy-to-read scale and rugged construction for dependable use. Simply place a few drops of water on the prism, view through the eyepiece, and adjust the calibration for accurate readings. Ideal for routine water checks, tank maintenance, and ensuring consistent salt balance in all saltwater aquariums.