COOLHIYA 2Pcs Glass Hydrometer Pram Specific Gravity Float Densitometer for Aquarium Water Testing and Temperature Measurement

Hydrometer:made of premium glass material which can directly with water,glass densitometer

Light meter:it is easy to use and suitable for fish tank and aquarium,glass densitometer

Glass float meter:in the aquarium, it is convenient to measure the specific gravity of the sea water and provide convenience for raising fish,glass densitometer

Glass densitometer:placed in any corner of the fish tank, floating design, automatic temperature/ testing,hydrometer

Pram meter:it is convenient to test the specific gravity and temperature of water,glass densitometer