Aqua One Sponge Fine,white in color. *Genuine Aqua One Spare part. *Suitable for Aqua One CF500 and CF700 (old style via aqua 230/300) Canister filters. *2 Per Pack 37W

Suitable for fresh & saltwater aquariums.
Removes the Fine particles in your aquarium.
Adds biological and mechanical filtration.
The Aqua One sponge pads trap solids and provide a home for filtration bacteria.

# Large surface area for bacterial attachment
# Smaller pore size traps smaller particles of waste
# Needs cleaning regularly
# Change every month to maintain performance