Aquarium Bio Sponge Filter Media Pad, 23.6" x 17" x 2", Open Cell Foam Cut-to-fit Matten Filter Fish Tank Sump Divider

ViaAqua Aquarium Bio Sponge Filter Media Pad, 23.6" x 17" x 2", Open Cell Foam Cut-to-fit Matten Filter Fish Tank Sump Divider

ALEGI Aquarium Filter Sponge Pad 23" x 12" / 23" x 16", 30PPI Bio Sponge Filter Media Cut-to-Size Foam for Fish Tank, Pond Filter (23" x 16" x 2")

ALEGI Aquarium Sponge Filter Pad, Bio Filter Media Foam Sponges, Cut-to-Size Foam for Fish Tank (20"x20"x1.57" (50PPI))