Fluval Sea Hydrometer

Fluval Hydrometer accurately and conveniently measures salt levels and specific gravity in marine aquariums.

• Compact design with large, easy-to-read markings
• Ideal salinity range clearly identified in green for added convenience
• Can be permanently installed inside the tank for continuous readings, or used as a portable measuring device when necessary
• For best results, test water regularly as stable salinity levels are essential for the health of marine fish and invertebrates