Part Number 771181

inexpensive renew kit is available

including koi and goldfish

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Bio Clear SDS Sheet                               Bio Clear Label

Vertex 9" Replacement Diffuser Disc waterfalls Part Number 7711819" Vertex, MicronBubble replacement diffuser disc. Fits all Vertex AirStations Diffusers Self cleaning and low maintenance EPDM compound with 100% rebound memory Flexible, long wearing, and clog resistant even in the dirtiest water bodies Highly efficient even during low or moderate air flows FlowControl technology equalizes airflow to each disk Energy efficient die cut perforations with a "Delta" surface pattern increase active surface area and