2-in-1 Multi-Purpose Aquarium Cleaning Kit - The gravel cleaner is ideal for water changes and sand washing. The aquarium pump nozzle grille prevents young fish, grass, and gravel from being sucked in. Aquarium Cleaner Compression Structure - Equipped with 1 soft water hose (184cm) and 2 hard water hoses (28cm x 2). The gravel cleaner holes are tightly connected, so there is no need to worry about water leakage. Aquarium Filter Check Valve Design, Note: Since the pump is a one-way pump, you need to place one end of the letter against the water outlet. Aquarium Water Changer, the pump is easy to hold, just press the pump a few times and the water will start automatically. The high-quality PVC pipe does not kink or obstruct the flow of water, simply bend it to any position to suit your use. (Attention: the water outlet should be located lower than the water inlet) The aquarium cleaner, aquarium gravel cleaner can be divided into different parts, you can adjust it according to your needs. It can also be attached to the aquarium, freeing your hands, making it ideal for daily maintenance and regular water changes