Hydrometers are an essential tool for all those that have saltwater aquariums. Operating on the basis of Archimedes' principle that a solid body displaces its own weight in the liquid in which it floats, Classica Super Defined Hydrometer has become an important saltwater aquarium tool.

Marine aquarium fish, corals, and other invertebrates require an ideal specific gravity to sustain their lives in the tank. Classica Super Defined Hydrometer is easy to use and gives you the right reading. The product is made up of high-quality materials so that you can use it forever and make the life of your marine creatures happy.