This category is Aquarium Hydrometers: Aquarium hydrometers are devices used by aquarium hobbyists to measure the specific gravity or salinity of the water in their aquariums. By gauging these parameters, they can ensure the water conditions are suitable for the specific marine organisms they house, such as fish, coral, or other aquatic species.
Parent categories: Pet Supplies
Related sub-categories: Fish / Aquarium Lights / Aquarium Substrate / Aquarium Testing Kits