Aquarium Foam Filter Size: Small: 5"x 5"x 4.13" high
For Aquariums Up to 40 gallons
The Hikari Bacto-Surge Foam Filter is an inexpensive way to maintain ideal water conditions via bacterial action. The high density foam provides extreme surface are for bacteria colonization while offering durability not common with competitive items.
Great For Use In Freshwater or Marine Applications.
Highly Porous Sponge Maximizes Bacterial Action.
Increased Surface Area Offers Maximum Bacteria Colonization.