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» Hydrometers & Refractometers
Salinity Refractometer by D-D The Aquarium Solution.
A Refractometer is a simple and robust way of accurately measuring the salinity within your aquarium and should be used by every serious marine aquarist.
Aquarium Systems Instant Ocean Hydrometer
For accurate readings every time, ideal for use in water temps from 20-29’C (68-85’F).
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