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Measure both Temperature and Specific Gravity of the water
Green indicators are ideal range of water temperature and specific gravity for most salt water / marine aquariums
Instruction:Place the hydrometer into water, and let it flow freely in the water
Categories: Aquariums and Accessories, Fish & Aquatic Pets, Hydrometers
Description
Measure both Temperature and Specific Gravity of the water
Green indicators are ideal range of water temperature and specific gravity for most salt water / marine aquariums
Instruction:Place the hydrometer into water, and let it flow freely in the water
If water level below the green indicator means more fresh water is required
If water level above the green indicator means more salt water is required
![HeroNeo® Aquarium Glass Float Hydrometer With Thermometer Salt Marine [Misc.] - Image 3](https://m.media-amazon.com/images/I/31kFcdEvcfL._SL500_.jpg)
![HeroNeo® Aquarium Glass Float Hydrometer With Thermometer Salt Marine [Misc.] - Image 4](https://m.media-amazon.com/images/I/41+emLxJ3SL._SL500_.jpg)