The adjustment shaft is made of engineering plastic instead of metal, eliminating concerns about corrosion. You can manually adjust the ideal angle without the need for additional tools. The water level controller is compatible with water purifiers and standard water buckets, providing a reliable water supply for fish tanks and aquariums. [EASY STORAGE] The floating valve features a common size, making it convenient for water addition and storage. The compact floating ball saves space and does not occupy excessive room inside the fish tank. [FLOAT VALVE] The adjustment shaft is constructed from engineering plastic, ensuring no rust and long-term durability. Manual adjustment is simple and tool-free. The multi-purpose bracket securely fixes the water replenisher. The water level controller works with both water purifiers and regular water buckets, offering an efficient solution for aquariums and fish tanks. [WIDE APPLICATION] This aquarium water adding device automatically replenishes fresh water to maintain optimal conditions for fish, enhancing their living environment. The fish tank water changer operates fully automatically with no electricity required. [VARIOUS INSTALLATION] The ATO system can be easily hung on an aquarium sump. The dual hanging design allows direct mounting on aquariums or fish tanks. The upgraded water level adjustment mechanism offers an increased rotation range, replacing traditional bracket adjustments. It supports water level control from 0.5 to 15 cm. Item Type: Aquarium Floating Ball Valve Size: 15cm x 5cm x 5cm (L x W x H) Features: 1. Made of high-quality acrylic for enhanced strength and durability. 2. Simple and convenient installation. 3. Tool-free manual adjustment. 4. Resistant to rust with a long service life. 5. Designed for easy connection with water pipes and convenient storage. Color: As Shown Material: Plastic Package Contents: 1 x Aquarium Fish Tank Float Ball Valve Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.