4m x 8cm Aquarium Sponge Filter Aquarium Filter Media Aquarium Filter Cotton High Density Filter Cotton Filters Pond Skimmer White Foam Fish Pond Small Sponge

Biochemical filter: Made of ultra-dense thick cotton, with good water absorption and high permeability, which can effectively filter and decompose dirt.

Thick filter cotton: Hard and soft cotton to the touch, can be washed repeatedly, durable.

Aquarium filter pad: It can be cut into any size according to your needs, easy to use.

Aquarium filter cotton: Suitable for seawater, freshwater, aquatic plant tanks, wide applications.

Aquarium filter: It has powerful filtration ability and can be reused after cleaning.