Unlike many other hydrometers, the Fluval Sea Hydrometer can be permanently kept in the aquarium.
It can be stuck on the side of the tank, to give you results whenever you need them, and thanks to its clear, plastic structure, it blends in easily.
It provides accurate and reliable readings of both salinity and gravity, so that you can monitor the vital parameters in your salt water aquarium.
- Clear, plastic case
- Large sucker to attach to aquarium
- Easy to read markings