The Airmax EasySet Weighted Pond Airline is designed for underwater applications. The airline rests on the bottom of your pond and is guaranteed not to float, even when filled with air. with a thick-wall and lead-free construction, EasySet weighted airline offers a durable, fish-safe, kink-free, and puncture-resistant option for years of continuous use with your compatible water aeration system. Please Note: Connectors are not included.