Accurate, instant temperature readings High-precision thermal technology displays water temperature quickly and reliably, so you can spot changes before they become a problem. Color-coded, temperature-sensitive display makes the current temperature easy to read at a glance without complicated numbers or extra tools. Simple, tool-free installation and removal Peel off the backing and stick the round thermometer directly to the outside of the tank or other containers. The special adhesive bracket holds it securely and is easy to remove when needed. Low-effort setup means you can check tank conditions fast — no wiring, no probes, no drilling. Practical, attractive design Round patch blends with the aesthetic of most fish tanks while providing clear, visible temperature feedback. Compact and unobtrusive so it stays out of the way of aquascapes and tank equipment. Why this thermometer matters Helps maintain the correct water temperature to reduce stress, prevent illness, and support healthy fish activity and metabolism. Useful for daily monitoring, heater calibration, and spotting gradual temperature shifts that can affect tank inhabitants. Compatibility and performance Designed to stick directly to tanks and a variety of water containers for flexible use. Fast, precise response from the thermal sensor with a multi-color display to indicate temperature ranges clearly. Use scenarios Routine aquarium care: Attach to your display tank to confirm heaters and chillers are holding the set temperature and to check conditions during water changes. Breeding and sensitive species: Monitor small breeding or quarantine tanks where consistent temperature is critical for eggs and fry survival. Temporary tanks and transport: Apply to travel containers, hospital tanks, or temporary setups to quickly verify temperature during transfers or treatments. How to use Peel the adhesive backing, press the round patch onto a clean, dry spot on the tank wall, and check the color-coded display to read the temperature instantly. To remove, peel off the bracket gently; no tools required. Key features at a glance High-precision thermal sensing Color-coded, temperature-sensitive display Easy adhesive mounting and removal Compact, round design that complements aquarium aesthetics A reliable, easy-to-read tool for fish owners who need fast, accurate temperature information without complicated installation.