Stable Aquatic Environment - Automatically adjust water levels to maintain a stable and healthy habitat for aquatic life. Suitable for fish tanks and eco-ponds alike., Smart & Space-Saving - Unobtrusive 0.7 inches diameter design fits seamlessly into any rimmed or rimless aquarium., Real-Time Protection - QST technology prevents overfilling, dry running, and sensor malfunctions, ensuring worry-free operation., Precision Sensors - Dual optical sensors offer precise water level monitoring, keeping fluctuations within 0.6cm difference., Complete Package & Warranty - Includes all necessary accessories, like powerful magnets and a reliable 70gph water pump. Enjoy a two-year warranty and excellent customer support.