Efficient 2-in-1 Water Changer: Connect this tool to your faucet, turn it on, and watch as water flows from your tank through the gravel tube. This system uses tap water pressure to lift gravel and sand, simultaneously vacuuming debris from the substrate, making aquarium maintenance quick and easy. Silent, Non-electric Operation: Our aquarium water changer operates without electricity and is exceptionally quiet, ensuring minimal disturbance to your . It features a round filter to prevent small fish and gravel from being sucked up, eliminating the need for a separate bucket. Automatic Siphon with Faucet Adapter: Attach the included adapter to your faucet, turn it on, and initiate an automatic water flow through the gravel tube. This setup allows for effortless aquarium refills and drainage, saving time and energy. Note: Water pipe not included and must be purchased separately for use with a 12/16 mm hose. User-Friendly Design: This water changer simplifies aquarium maintenance by allowing you to switch from vacuuming to refilling with a simple valve turn. It's designed for convenience and efficiency, making regular water changes a breeze. Simple Assembly and Storage: The water changer is designed with straightforward principles for easy assembly and compact storage. It streamlines the process of changing water, saving you time and effort during routine aquarium upkeep. Color: Black Material: plastic Package Contents: 1 x fish tank cleaner(No water pipe) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.