The AquaFX Leak-Stop Valve Water Detector Replacement Pads are designed to work seamlessly with your AquaFX Leak-Stop Valve system. These crucial replacement pads are super-absorbent and engineered to expand rapidly upon contact with water, activating the valve mechanism. This swift action effectively shuts off the water supply, providing immediate protection against potential leaks and preventing costly floods in your aquarium area. Each package contains five individual replacement pads, ensuring you have ample supply for future leak detection events. The original Leak-Stop Valve itself features convenient Quick-Connect fittings, allowing for effortless installation and maintenance, making the entire leak prevention system user-friendly and highly efficient. These pads are a vital component in maintaining the integrity of this proactive leak detection solution. These replacement pads are ideal for any saltwater aquarist utilizing the AquaFX Leak-Stop Valve and seeking continuous peace of mind. They are essential for safeguarding sensitive areas such as around your sump, near your main display aquarium, or at your RO/DI water station, where even a small leak can cause significant damage. Regularly replacing these pads ensures your leak detection system remains fully operational and ready to protect your valuable equipment and home.