Keep your aquarium water levels stable with the fish tank auto refill system. This smart water replenishment device is suitable for both planted and marine tanks, ensuring your fish and plants thrive. water top-off easy to install and use, providing a reliable solution for maintaining the levels in your aquarium. Features -Color:White -Material:ABS -Size:7.60X4.20X2.50cm/2.99X1.65X0.98in - : automatically detects and adjusts water levels, providing a solution for maintaining your aquarium -Stable aquatic environment: ensures precise water level control to create a stable and healthy environment for your fish and plants, enhancing their overall wellbeing -Time efficient: reduces the need for frequent manual , allowing you to spend more time enjoying your aquarium and less time maintaining it -Versatile application: compatible with both saltwater and freshwater aquariums, making it a versatile tool for various tank setups -Durable and : constructed from sturdy abs material, this device is built to withstand continuous use and provide reliable performance for years to come Package list: 1 x set of Water Level Controller