Reliable Siphon Protection for Your ATO SystemThe ATK Siphon Break Replacement is a 1/4" to 1/4" push-fit adapter designed to prevent back-siphoning in your Neptune ATK (Auto Top-Off Kit) system. This essential safety component ensures water flows only where it should, protecting your aquarium from overfilling or reverse siphoning incidents. Key Features & Benefits1/4" push-fit adapter siphon break for ATO applications Prevents siphoning and backflow issues Compatible with Neptune ATK systems and 1/4" tubing setups Quick and easy push-fit installation Why Use a Siphon Break?A siphon break ensures that once your top-off pump turns off, water won’t continue to flow via siphon effect. This small but vital part helps prevent unwanted overfilling or leaks in your aquarium system.