Innovative Design: The handle is specially designed for easy pressing, and the comfortable grip makes it easy to squeeze without effort. The working principle of the water changer is gravity, does not require electricity and is absolutely safe. This sand cleaner is quiet when it works, but the electric aquarium water changer makes noise when it works. Can be used to rake gravel (level the ground). Sand and gravel cleaning (remove powder particles). Faecal absorption (clean fish excrement). Quick water change (stronger suction for easy water changing). The aquarium has always been kept clean and beautiful. Easy to useAccessories: 1 x air pressure control mechanism (with a fixed valve), 2 x extended air inlet hoses, 1 x extension hose connector; 1 x water outlet pipe (the water pipe can be cut as needed); 1 x water flow clamp (easy to adjust the water flow); Instructions: If you don't know how to use it, please refer to the instruction manual. Scope of application: Fortune Star aquarium gravel cleaning kit is suitable for aquariums of different sizes. There are two lengthened inlet pipes and one 82inch long outlet pipe, which can be adjusted to the appropriate length according to your fish tank size, and the water changer will not affect the fish during use. Feature:Six-in-one functions, changing water, washing sand, scraping algae, removing moss, sucking stool and supporting sand, one machine is versatile and the quality is good.Two 40cm transparent tubes for water inlet and one 8mm inner diameter 2.15m hose for water outlet, suitable for large and small aquariums.The water inlet has a built-in 3D filter cover to prevent small fish or aquatic plants from being sucked in.Convenient drainage design, easy to free your hands, comes with a water pipe fixing clip, small hands-free accessories, convenient and practical.Flow adjustment switch, easy to adjust. Made of wear-resistant material, durable and not easy to damage. Notice:Due to different monitors and lighting effects, the actual color may be slightly different from the picture. Due to manual measurement, please allow 1-3cm deviation.When pumping water, the position of the water outlet should be lower than the position of the water inlet Product color: as the picture Shipping quantity: 1 piece