Feature: 1. Take advantage of siphon principle, very convenient to change the water of your fish tank quickly. 2. It can also be used for fish tank sand wash and clean fish excreta. 3. High-quality soft hose and hard pipe, easy to connect and use. 4. It should be used with a hand-operating pump（not included). 5. You just need to shake up and down and the water will out, the sand can be washed according to the siphon principle. Specification: This is a quite convenient aquarium accessory for you to own. It can be used to change the water of fish tank and clean fish excreta etc. Thus, it is cost-effective for you to purchase. Features: Take advantage of siphon principle, very convenient to change the water of your fish tank quickly. It can also be used for fish tank sand wash and clean fish excreta. High-quality soft hose and hard pipe, durable, breakable-resistant and easy to connect and use. It can be used with water flow control valve, water tape to easily change and pour the water into fish tank. How to use: You just need to shake up and down and the water will out, the sand can be washed according to the siphon principle. Specifications: Hose Length: 1.43m / 56.3in Water Pipe Length: 18.5cm / 7.28in Hose Diameter: 0.6cm / 0.24in Item Weight：73g / 2.57oz Package Size: 20 * 14 * 3.5cm / 7.87 * 5.51 * 1.38in Package Weight: 90.5g / 3.19oz Package List： 1 * Hose 1 * Pipe Package List: 1 * Hose 1 * Pipe