Fish keepers, this LABO floating thermometer is exactly what you need to monitor your aquarium temperature accurately! You get two thermometers in the pack, which is perfect if you have multiple tanks or want a backup. The glass construction is mercury-free and completely safe for both freshwater and saltwater aquariums - no worries about harmful chemicals leaking into your tank. It displays temperature in both Fahrenheit and Celsius with a clear, easy-to-read scale from 0-40°C (32-104°F). The thermometer floats naturally in your tank, but it also comes with an optional suction cup that lets you mount it vertically on the glass for even easier reading. The vertical positioning is important because it allows the colored liquid to settle properly for accurate temperature measurement. The build quality is solid - treated glass that resists breaking and maintains accuracy over time. It's suitable for fish tanks, reptile enclosures, ponds, and even swimming pools. Installation couldn't be simpler: just place it in your tank vertically, and if you prefer, attach the suction cup to keep it in place. Each unit is inspected by their QA team to ensure quality before shipping. If you're serious about maintaining the right environment for your fish or reptiles, having a reliable thermometer is essential, and this LABO model delivers accurate, consistent readings in a safe, durable package. It's one of those basic but crucial tools that every aquarium owner should have for keeping their aquatic pets healthy and comfortable!