Penn-Plax Cascade 600 Filter Replacement Bio-Sponge (1 Sponge) - Provides Physical And Biological Filtration For Freshwater And Saltwater Aquariums

Finaqua Bio Sponge Filter For 10-75 Gallon Fish Tank, Quiet Breeding Filter For Fry And Shrimp

Aquarium Large Bio Sponge Filter Quiet Betta Fry Shrimp And Small Fish Foam Filter For Fish Tank Up To 60 Gallon

Penn-Plax Cascade 150 Or 200 GPH Hang On Filter Aquarium Bio Sponge Replacement 1 Pack Cut To Fit Cascade 150 Or 200

Aquapapa Aquarium Bio Sponge Filter Up To 60 Gal Breeding Fry Betta Shrimp Fish Tank

Aquapapa Pack Of 2 Bio Sponge Filter For Betta Fry Aquarium Fish Tank Up To 55 Gallon, Double Sponges

Penn-Plax Cascade Bio-Sponge 500 Aquarium Filter, Medium

ALEGI Aquarium Sponge Filter Pad, Bio Filter Media Foam Sponges, Cut-To-Size Foam For Fish Tank (20"X20"X1.57" (50PPI))

Aquapapa Bio Sponge Filter Media Pad 23" Cut-To-Fit Foam For Aquarium Fish Pond Reef Canister Tank

Penn-Plax Cascade Aquarium Bio-Sponge 1200 & 1500 Filter, Medium

Aquapapa Bio Sponge Filter For Betta Fry Aquarium Fish Tank Up To 55 Gal, 3-Pack (L)

Aquapapa Bio Sponge Filter For Betta Fry Aquarium Fish Tank Up To 30 Gal Each, Double Sponge Design, 4 -Pack

Aquarium Bio Sponge Filter Small Fish Foam Filter With Airline Tubing Suction Cups Check Valve Connectors And Control Valve For Fish Tanks Up To 20 Ga

50cm Biochemical Filters Pad,15PPI/30PPI/40PPI Filter Foam Bio Sponge Filter Media For Aquarium Fish Tank Pond Reef Canister