Accurate stick-on aquarium thermometer that makes monitoring water temperature simple and reliable Key benefits Instant, accurate readings: High-precision thermal technology shows the tank temperature immediately, so you can respond quickly to changes that affect fish health. Simple, tool-free installation: Peel the backing and press the adhesive patch to the outside of the tank or container — no screws, magnets, or special tools required. Clear, at-a-glance display: A temperature-sensitive, color-coded patch shows the current range using multiple colors, removing guesswork from small numerical displays. Attractive, low-profile design: The round patch blends with the tank aesthetic while providing practical monitoring. What it does Measures and displays the current water temperature via a color-changing patch applied to the outside of the container. Uses high-precision thermal sensing to provide instant detection so you can maintain stable conditions for fish and other aquatic animals. Practical features Easy peel-and-stick backing for quick attachment to the outside of most aquarium and container walls. Color-marked display indicates temperature ranges visually, making it easy to see whether the water is within the desired band. Compact round design fits discreetly on tanks without interfering with equipment or decor. Compatibility and use Designed for use on the outside of aquariums and similar containers; ideal for freshwater and saltwater tanks, breeding tubs, transport containers, and small water features. Works well as a secondary check alongside in-tank heaters and digital probes to help verify conditions without opening the tank. Typical scenarios Home aquarium: Attach to the outside of the glass to quickly confirm heater performance and stable temperature for fish, shrimp, or plants. Breeding or quarantine tubs: Monitor small containers during breeding or treatment without disturbing the animals. Transport or temporary tanks: Stick on portable containers to check temperature at a glance during transfers or short-term housing. What you get A round, adhesive, color-changing thermometer patch that provides a quick, visual indication of water temperature using high-precision thermal sensing and an easy-install adhesive mount.