Heavy-duty ceramic air diffuser producing a wide curtain of fine bubbles for koi ponds, moving-bed filters and larger pond systems.

The Ceramic Air Stone DY 102-B (50 x 300mm) is a professional-grade air diffuser designed to provide exceptional oxygen transfer for koi ponds, garden ponds and biological filtration systems.

Manufactured from high-density ceramic, this heavy-duty diffuser produces a dense curtain of fine bubbles that maximises dissolved oxygen levels while improving water circulation and supporting healthy aquatic life.

With its generous 50mm diameter and 300mm length, the DY 102-B delivers significantly greater air distribution than standard air stones, making it ideal for larger ponds, moving bed filters, Nexus systems, quarantine tanks and commercial aquaculture applications.

Compatible with Evolution Aqua AirTech, Hi-Blow, Medo, Secoh and most other pond air pumps, this ceramic diffuser offers long-lasting, reliable performance for continuous operation.

✔ Professional Aeration ✔ Fine Bubble Performance ✔ Healthier Pond Water

Boost oxygen levels and maximise filtration efficiency with the Ceramic Air Stone DY 102-B (50 x 300mm) – the professional choice for koi ponds, biological filters and high-performance pond aeration.