Aqua One Black Sponge 168s - 3 Pack (#25168S)
Aqua One Replacement Black Sponge 168s is designed for:
Aqua One Spare Part Number - 25168S
Aquarium Kingdom Tips
When cleaning the sponge always use water from the aquarium, not tap water. By doing this you can avoid killing the beneficial bacteria that break down fish waste in your aquarium.