Amazon.com : PENN-PLAX Standard Airline Tubing for Aquariums – Clear and Flexible – Resists Kinking – Safe for Freshwater and Saltwater Fish Tanks – 8 Feet : Aquarium Air Pump Accessories : Pet Supplies
DERPIPE Clear Vinyl Tubing - 1/2" ID 5/8" OD PVC Tube Food Grade Flexible Plastic Pipe Hose for Homebrewing, Siphon Pump 3 Meters(10ft) Length: Amazon.com: Industrial & Scientific
Amazon.com: Camco 25ft TastePURE Drinking Water Hose- Lead and BPA Free, Reinforced for Maximum Kink Resistance 1/2" Inner Diameter (22735) , White : Tools & Home Improvement