Features: Water Exchanging: can change the water and make your aquarium refreshed again quickly. Easy to Use: just press the air-pressing button to pump water out, easy to install and operate. Handy Design: compact structure with 2pcs water inlet tubes, fitting different-sized fish tank. Prevent Blocking: with filter basket in the tube, effectively avoiding blocking by gravel. Equipped with Many Accessories: 6ft soft hose, water flow clamp, hose clamp and anti-backflow valve design. Specifications: Material: PE + PVC Operating Method: Manual air-pressing Water Inlet Tube Diameter: 25mm / 0.98in Water Inlet Tube Length: 40cm / 15.75in Soft Hose Length: Approx. 180cm / 5.91ft Fit for Aquarium Height: