Features
Light meter--made of premium glass material which can directly with water,hydrometer
Glass float meter--in the aquarium, it is convenient to measure the specific gravity of the sea water and provide convenience for raising fish,light meter
Hydrometer--it is easy to use and suitable for fish tank and aquarium,light meter
Glass densitometer--it is convenient to test the specific gravity and temperature of water,light meter
Pram meter--placed in any corner of the fish tank, floating design, automatic temperature/ testing,light meter
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