- [Durable Plastic Construction] This saltwater salinity meter is made from robust plastic, ensuring it withstands regular use in your fish tank environment. - [Automatic Detection] The aquarium glass saltwater hydrometer features a built-in auto-detection system that accurately measures the specific gravity of water samples without manual adjustments. - [Precise Measurements] The hydrometer automatically recognizes water density levels, providing reliable readings both in ponds and within tanks, so you can maintain optimal conditions for your aquatic life. - [Comprehensive Salinity Testing] Designed specifically for aquariums, this salinity tester measures both salinity and specific gravity, with a range of 1.000 to 1.030 for specific gravity and 0 to 40 for salinity, enabling you to monitor water quality effortlessly. - [Easy Maintenance] If you encounter salt crystallization on the pointer, simply soak the hydrometer in warm water or vinegar for 30 minutes, rinse, and air dry to restore accurate functionality. Use Scenarios: - Perfect for hobbyists managing saltwater aquariums, ensuring that your marine species thrive in well-regulated environments. - Ideal for aquaculture professionals who need to consistently monitor water conditions for optimal fish health. - Useful for educational purposes in aquariums or science classes, allowing students to experiment with and understand water chemistry in a hands-on manner.