200 feet reel of Hydro Logic DownUnder™ 5/8 in. diameter (0.625 inch I.D.) air supply tubing used to connect Hydro Logic AirLift air compressors to AirPod air diffusers. DownUnder aeration tubing is constructed of a flexible PVC composite and is self-weighted in order to firmly remain along the pond or lake bottom after the installation. Recommended for most Hydro Logic AirLift aeration systems installations - especially when water depths exceed 15 feet and tubing runs exceed 500 feet in length.
Sections of DownUnder™ tubing are connected together using standard PVC solvent weld cement and ½ inch insert fittings. DownUnder™ air supply tubing has low friction walls (0.625 inch I.D.) for maximizing airflow rates and minimizing air pressure drops. DownUnder™ tubing is designed to reduce the overall system pressure requirements and to extend the life of the air compressors. The wall thickness of 0.225 inches provides long-term durability and protection against kinking and punctures. The air supply tubing remains flexible in cold temperatures allowing for easy year-round installations.