Wide application and automatic operation Replenishes aquarium water to maintain a stable environment for fish. The water changer starts and stops automatically and requires no electricity. Easy to install ATO system can be easily attached to your aquarium tub for quick setup and hassle-free operation. Transparent bracket and durable mounting Transparent bracket with hand tightened screws provides a sturdy, durable mount. The multi purpose holder can be used to fix the tank spray system on water and land setups as needed. Adjustable design Adjustable to fit different aquarium tubs and mounting configurations, accommodating various spray fittings and positions. Use scenarios - Daily evaporation management in freshwater or marine tanks to maintain consistent water level with minimal manual intervention. - Flexible mounting for spray bars or water lines in different tank layouts, enabling secure fixation and easy adjustment. - Temporary or custom installations where a reliable, adjustable holder is needed to support spray components or related equipment.