Amazon.com: MECCANIXITY PVC Rigid Round Pipe 12mm ID 16mm OD 200mm Clear High Transparency for Water Pipe, Aquarium, Fish Tank : Industrial & Scientific
1pcs 110mm Outer Diameter PVC Tube Clear Water Pipe Hard Duct Hollow Vessel Through Pass Column 100/150/200/300/400/500mm Long - (Specification: 110mmx5mm, Length: 150mm) : Amazon.ca: Tools & Home Improvement