The Fluval SEA 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