Coralife is one of the market’s leading manufacturers of premium aquarium products.
Coralife’s Hydrometer takes a true water sample at six inch depth.
Easy to read and accurate this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums.

Measure salt water or salinity of water, ideal for aquariums and marine monitoring.
Measures on 2 scales, Specific Gravity (D 20/20) and parts per thousand.
Features automatic temperature compensation.

Safe Material:Made of plastic,aquarium clear Automatic Accurate Readable SaltWater Hydrometer.
Durable Clear Acrylic:Accurate, durable, and easy to read your marine aquarium’s salt level and specific gravity,Small and waterproof.if the specific gravity between 1.000 – 1.019,show that the specific gravity is small;if the specific gravity between 1.020 – 1.023,show that the specific gravity is nomal;if the specific gravity between 1.024 – 1.030,show that the specific gravity is big;
Clearly Safe Zone Indicated:Includes solinity and specific grovity scales.The outside rang of scale indicates salinity(PPT).The inside range of scale indicates gravity.And with safe zone clearly indicated.Range of use: 0-40 degrees (1.000-1.030).If the salinity ppt between 32 – 40，show that the salinity hydrometer is high;If the salinity ppt between 27 – 31，show that the salinity hydrometer is normal; If the salinity ppt between 0 – 26，show that the salinity hydrometer is light.

🐠 Safe Material & Unique Design: Made of durable Acrylic, this Fish Tank Test Kit salinity Hydrometer is designed with an automatic level function
🐠 Quickly, easily, and accurately measurement: With this hydrometer saltwater aquarium test kit, you can test your marine aquarium’s salt level and specific gravity, and It is optimum to be put into below 6″ deep water to avoid the error caused by the oil film on the water
🐠 Higher Accuracy & safe zone indicated: Readings are temperature-corrected & accurate to +/- 0. 001. specific gravity units ranges from 1. 000 – 1. 030 with a safe zone of 1.020-1.023. The outside range of scale indicates salinity ppt, ranges from 0-40, safe zone is 27-31

Measures on 2 Scales: Aquariums refractometer features Specific Gravity (D 20/20) 1.000-1.070sg and parts per thousand 0-100PPT (1‰=1ppt=1000ppm)
Seawater refractometer measures saltwater or salinity of water, ideal for aquarium, marine monitoring, fish-keeping,salty pools&spas and etc.
ATC Function: salty water refractometer with automatic temperature compensation, allow you obtain accurate readings easier and faster

Made of high quality plastic, aquarium transparent, automatic accurate reading brine hydrometer
Accurate, durable and easy to read salt and specific gravity of your marine aquarium, small and waterproof.
The external range of the scale indicates salinity (PPT), and the internal range of the scale indicates gravity. And clearly mark the safe area. Application range: 0-40 degrees (1.000-1.030).