Hikari AccuProbe Hydrometer is a precision measuring instrument specifically formulated to provide accurate salinity readings in aquariums. Designed to deliver reliable and consistent measurements, it helps create the conditions required for proper water chemistry management, supporting healthy coral growth, optimal fish health, and overall aquarium system stability. By allowing hobbyists to monitor salinity levels and make timely adjustments, it helps maintain balanced water parameters and supports long-term aquatic health. Easy to use, durable, and precisely manufactured for consistent results, Hikari® AccuProbe Hydrometer helps maintain a stable aquatic environment where fish, corals, and other aquarium inhabitants can thrive.