Poly pipe is a flexible, durable polyethylene tubing used in pond systems for water supply lines, automatic fill valves, and aeration airlines.

Applications
Aeration Airlines: Runs unweighted or flexible poly tubing from an air compressor on shore to diffusers in the pond.
Water Supply & Fountains: Feeds water lines, bypasses, or automatic fill valves.
Large Ponds: Distributes water for irrigation or intake systems. Can be used as air supply line for aeration.

Benefits of Poly Pipe
Freeze-Resistant: More forgiving in cold weather and winter freeze-thaw cycles compared to PVC pipes and hoses.
Flexible & Lightweight: Compared to PVC hose PE is easier to bend around landscaping features without cracking and less prone to kinking although care must still be taken as bending at a sharp angle can cause kinks.  Easy to route around rocks without using 90-degree elbow fittings, highly cost-effective, and simple to attach with barbed fittings and stainless steel hose clamps.
UV Resistant: Treated to withstand sun exposure when run above ground or along the shoreline.