The Water Tester is designed for homeowners, aquarium enthusiasts, and hydroponics growers who demand accurate water data to protect their systems. Measures salinity, specific gravity, and temperature with fast, reliable readings. Reduces guesswork and helps maintain conditions whether you're testing tap water, a freshwater aquarium, or a saltwater reef system. Advanced sensors and a userfriendly interface deliver clear readings on a resolution display; automatic temperature compensation ensures accuracy across temperatures. Compact handheld design with a durable, splashresistant housing; lightweight and portable; powered by batteries for field use. Compatible with standard calibration solutions for salinity and gravity tests; simple calibration process. Ideal for: 1) Home aquariums: track changes in salinity and temperature during water changes; 2) Marine aquariums: maintain stable reef conditions; 3) Hydroponics: monitor reservoir density and temperature for consistent plant growth.