Flexible Black Corrugated Non-Kink PVC Water Garden Pond Hose (MM - Metric) This tubing works best with Alpine, Atlantic, AquaScape, Calpump, Laguna, Lifegard, Little Giant, and Tetra Products. Due to variations in fittings, some buildup may be required for secure fit. Our Non-Kink Flexible PVC tubing commonly referred to as non-kink, kink free tubing water garden hose, pond tubing, flex pond and corrugated tubing is perfect for use with water gardening ponds, waterfalls, fountains, aquariums and fish hatcheries, drains, light farming and gardening and light irrigation. While it is not as strong and durable as our flexible PVC pipe, it is somewhat more flexible and lighter.