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The Rio Floating Glass Dual Hydrometer and Thermometer provides accurate measurements of specific gravity, salinity, and temperature in marine aqua...

The Rio Glass Floating Thermometer is easy to read and reliable! Perfect for aquariums and reads between 35-110 Degrees F. Floating Made of durable...

The Rio Mini LCD Thermometer offers reliable readings and a compact design. Easy to read LCD display Safe for use in Freshwater and Saltwater Aquar...

The Rio Stick-On Digital Aquarium Thermometer is a great way to keep an eye on your aquariums temperature. This thermometer strip is temperature se...