Features
¡ï For Salt Water / Marine Aquariums.
¡ï Easy to use.
¡ï Measure both Temperature and Specific Gravity of the water.
¡ï Green indicators are for ideal range of water temperature and specific gravity for most salt water / marine aquariums.
¡ï Instruction:Place the hydrometer into water, and let it flow freely in the water; If water level below the green indicator means more for fresh water is required; If water level above the green indicator means more salt water is required.
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