Alpine Corporation 2 in. I.D. x 50 ft. Multi-Use Pond Black Kink

Linking microbiome and stress hormone responses in wild tropical treefrogs across continuous and fragmented forests

Alpine Corporation 2 in. x 50 ft. Schedule 40 Black PVC Ultra Flexible Hose for Koi Ponds, Irrigation, Water Gardens and More PH200BK-50 - The Home Depot

How to Hike the Long Trail of Vermont – Darn Tough

50' Kink Free Heavy Tube - Alpine Corporation : Target

Alpine Corporation 50' PVC Tubing with 1-1/4 Inside Diameter for Ponds and Fountains, Black : Industrial & Scientific

Alpine Corporation 2 in. I.D. x 50 ft. Multi-Use Pond Black Kink Free, Corrugated, Non-Kink Flexible PVC Tubing KFH200-50 - The Home Depot

Alpine Corporation Black Pond Tubing in the Pond Accessories department at

Alpine Corporation 100' PVC Tubing with 1/2 Inside Diameter for Ponds and Fountains, Black : Industrial & Scientific

References - Plant Variation and Evolution