Aquarium water changer is a practical tool, you can clean the aquarium easily and quickly. Ideal for changing water and cleaning gravel. With on / off flow control tap design, it is easy and convenient to use. This aquarium water changer is made of high quality plastic, which can use for a long time. The flexible, transparent PVC hose transfer fluids and faster. The head section (integrated gravel / fish strainer) is specially designed for gravel cleaning. You can dig it right into the gravel. In mini reef and aquatic plant aquariums, clean the gravel bed while making regular water changes. Small vacuum cup makes cleaning around and under stones, wood and corals easy. 7.5ft total in length, and you can add extra hose to the faucet if needed (extra hose not included) Small container of self-priming water transfer design for faster jobs (like siphoning diesel out of the car, etc.)