Fluval Sea Hydrometer by by Fluval

Fluval Sea Hydrometer provides accurate measurements of specific gravity and salinity in marine aquariums. This easy-to-read hydrometer has clear markings and is compact and easy to use and can be installed inside a tank permanently for continuous readings or used as a portable device.

• Accurately measures specific gravity and salinity
• Easy-to-read
• Compact with clear markings