Aquarium Systems Sea Test Hydrometer

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  • Regular price $25.00
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The Seatest Hydrometer from Aquarium Systems is part of their excellent Sea Test range, designed to make the best of your aquarium.

This precise device will measure the specific gravity and salinity of tropical seawater, and provide you with the most accurate readings.

SeaTest TK-505 hydrometer is a veteran in marine aquarium hobby. Made of almost unbreakable acrylic, just pour some saltwater inside to directly obtain a reading of specific gravity/salinity hydrometer, this model is accurate enough for everyday quick readings on marine aquariums.


  • Unbreakable and easy to clean.
  • Measuring range relative density: from 1000 to 1030
  • Measuring range from 0 to 40 PPT salt stability