eco-filtration Round Ceramic Air Stone 210mm – Large Fine Bubble Aeration Disc for Ponds, Koi Tanks & Aquatic Systems, Heavy-Duty Ceramic Air Diffuser with 8mm Connector for High Air Flow Pumps

• Efficient Fine Bubble Aeration – Produces a steady stream of micro-bubbles that increase dissolved oxygen, improving water circulation and clarity for healthier fish and plants
• Durable Ceramic Construction – Made from a refined, long-lasting ceramic compound that ensures consistent air output and exceptional reliability under continuous use
• Protective Plastic Housing – Reinforced ends protect the ceramic body from impact and abrasion, extending service life in both ponds and aquariums
• Compatible with Most Air Pumps – Designed to fit common flexible air hoses (4mm or 8mm ID), suitable for koi ponds, aquariums, and hydroponic setups
• Quick & Easy Installation – Simply connect to your air pump using the barbed hosetail connector for secure, leak-free performance and instant oxygenation

The Ceramic Air Stone Series provides professional-quality aeration for ponds, aquariums, and hydroponic systems. Each stone is crafted from a refined ceramic compound that delivers fine, uniform bubbles, effectively increasing dissolved oxygen levels and enhancing biological filtration for clear, healthy water. Built to outperform traditional air stones, each model features protective plastic end housings for impact resistance and long-term reliability. Whether used in koi ponds, ornamental tanks, or hydroponic reservoirs, these ceramic diffusers provide superior oxygen transfer and prevent stagnant areas in your water system. All models are easy to connect to standard air pumps via 4mm or 8mm barbed connectors, ensuring a snug, secure fit for continuous use. Available in multiple sizes and shapes to suit small aquariums and large pond systems alike.