Glass Thermometer – Floating

The Glass Thermometer – Floating is a sealed glass instrument weighted to float upright at the water surface, displaying the current temperature on a printed scale visible from above or from the front of the tank. It requires no mounting hardware and can be dropped into any aquarium, breeding container, or bucket for an instant reading.

The floating design makes it particularly convenient for monitoring multiple tanks quickly — simply move the thermometer from tank to tank in succession. Its unanchored nature means it drifts with currents, eventually settling in a still zone representative of average tank temperature.

A popular choice for breeders managing multiple spawning tanks, keepers who perform frequent water change bucket checks, and as a low-cost emergency thermometer when a primary unit fails.