ALEGI Aquarium Filter Sponge Pad 30PPI / 40PPI / 60PPI Bio Sponge Filter Media Cut-to-Size Foam for Fish Tank, Pond… Price: $7.99$9.99 (as of 05/12/2022 06:57 PST- Details)

Size: 17.5″ x 17.5″ x 1.2″ 40PPI, Easy to cut.
Sponge filter provide both mechanical and biological filtration,Trap large bits of waste,And will not get clogged easily.
Can be cut to fit your filters.Used for any aquarium or pond filter.

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