Aquariums Hydrometer

Hydrometers and Refract meters are essential equipment for saltwater aquariums. Use these testing devices to maintain the ideal environment for your marine aquarium inhabitants. Also great for brackish water aquariums. Accurate measurement of specific gravity is crucial for maintaining thriving saltwater aquariums. That's why we offer the Portable Refract meter for professional results at a great price. This simple-to-use, optical instrument gives temperature-compensated readings of specific gravity and salinity clearly displayed on the internal scale.