Orb-3 D TR MixAirTech Self-Sinking Aeration Hose, 25 Feet, Black 25 Feet 3/8-Inch ID

The simplest way to get air to your diffusers without ruining the aesthetics of your pond,Sinks to the bottom by itself - no weights necessary,Extremely durable, does not kink and remains flexible even in cold weather,This inside of the tubing has a smooth bore finish so there is less resistance which makes your aeration system more efficient,Premium Quality Hose Made in the USA for Maximum Durability