?Pay Attention?Bubble attachment on the pointer may cause incorrect reading. Please use the hydrometer to carefully buffer bubble attachment. ?Reading Scale?Based on the internal reading of the scale, based on the salinity of the horizontal scale (PPT). The recommended ratio of water in a tank is between 1,020 and 1,023 (safe range). Rinse with water after each use. ?Automatic Water Level?When the water es the state of full water (upper part with guide plate), lift the hydrometer, the product can be manually or hung on the cylinder, with automatic water level function, can automatically find the water level, to avoid errors. ?Usage?Insert the hydrometer at least 15 cm p into the tank (if the insertion line is less than 15 cm, the grease on the tank will affect the accuracy of the test). ?Application Range?Suitable for warm water (20-30?). A change in temperature will cause a change in the reading. Unit specific gravity is accurate to ±0.001.

Date First Available: September 9, 2020. Best Sellers Rank: #82,100 in Pet Supplies. Customer Reviews: 3.1 out of 5 stars 7 ratings 3.1 out of 5 stars. Item model number: Pssoppon9ad0xhvg. : B08HQSFKBF. Manufacturer: Pssopp. Item Weight: 3.1 ounces.