The Engel 2" Ceramic Aerator Stone is a high-performance bubble diffuser designed to maximize oxygen levels in live bait wells and coolers. Featuring a weighted, low-profile white housing, the stone stays securely at the bottom of the tank without the need for suction cups, while its porous blue ceramic core produces a dense cloud of micro-bubbles for efficient gas exchange. Equipped with a durable stainless steel 3/16" barbed fitting, it resists corrosion and provides a reliable connection to standard airline tubing, ensuring your bait stays lively and healthy for longer periods.