Aquarium Solutions Bacto-Surge Biological Action Sponge Filter
The difference is in the quality of the foam sponge. Hikari Aquarium Solutions Bacto-Surge Foam Filter employs the highest-quality foam sponge they could source to provide outstanding mechanical and biological filtration. Extreme foam density allows for greater surface area per square inch to support significant levels of beneficial bacteria.
Filter Size: Large
Product Height: 5.88 in
Product Length: 4.88 in
Product Width: 4.88 in