The Marina LCD Digital Aquarium Thermometer features an easy-to-read liquid crystal display (LCD) that is reliably accurate to plus-or-minus 1°F: no guessing, no color confusion. It mounts horizontally and easily sticks to the outside surface of any aquarium.

• Accurate and easy to read
• 3.125" Tall Thermometer mounts easily on outside glass
• Removable

Just place this removable thermometer in an easy to read position below waterline. Reads temperature range from 72°F to 86°F.