JBL 6099300 ProCristal i30 Filter Sponge

Clean water, healthy fish: replacement filter sponge for JBL ProCristal i 30 Clear aquarium water: replace filter sponge every 3 months. Optimal cleaning: pore width 30 ppi Optimal biological filtering: promotes the settlement of beneficial cleansing bacteria. Box contents: replacement filter sponge for JBL CristalProfi i 30, ProCristal i30 FilterSponge