2-in-1 Multifunctional Cleaner: The gravel cleaner is ideal for water changes and sand washing. The large-diameter suction pump has a built-in round-hole filter to prevent small fish and gravel from being sucked in. It effectively removes feces and food from the tub, and separates the residue to ensure water freshness. High-quality Material: This aquarium water dispenser is made of high-quality plastic and can be used for a long time. The soft and transparent PVC hose can transfer fluid more quickly. All materials are separate, can be disassembled by themselves, and are easy to clean. At the same time, disassembly and assembly are simple and easy to carry. Easy to Use: The siphon pump is easy to grip. Just squeeze the pump a few times and the water will flow out automatically. High-quality PVC pipes will not collapse and therefore will not block the water flow. (Note: The position of the water outlet should be lower than the position of the water inlet.) Control Valve Design: The water flow can be adjusted through the control valve, and the water flow can be controlled at will according to the actual situation, which is more conducive to cleaning. Multi-function: The small and exquisite self-priming water diversion design can not only be used in fish tanks, but also can be used as a car oil suction pump to siphon diesel from the car.