Flexible 4 mm Air Line 

 Aqua One's Flexible 4mm Air Line Tubing is made of PVC and designed for connecting air stones to air pumps to effectively aerate your water. Available in precut lengths of 2.5m and 5m, and 100m this versatile tubing ensures optimal performance in maintaining ideal water oxygen levels for your aquatic or hydroponic plant life.

Available in Clear and Black.