Bio sponge filter, great accessory for aquarium and provides both aeration and filtration for your fish??NOTE: small sponge filters, please make sure the size before you purchase.?
Simply install an airline into the unit and provide both aeration and filtration for your fish, increase oxygen and keep and water clean.
Simply to connect the sponge water filter with an air pump thru airline tubing.
Aquarium sponge filter come with 2 Available Sizes: Small Ones Dimensions: 3.0"D x 6.5"H for recommended max tank size of 10 Gallons; Large Ones Dimensions: 4.5"D x 8.0"H for recommended max tank size of 20 Gallons.
Package Content: 3 * Large Sponge Filter + 3 * Small Sponge Filter.