Provide both mechanical and biological filtration.
Simply install an airline into the unit and provide both aeration and filtration for your fish. Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle.
The sponge traps larger waste particles mechanically cleaning the water without trapping baby fish.
Product dimensions: 3.8'L x 1.8'W x 5.5'H; sponge dimensions: 1.8'D x 3.0'H. They are useful for as breeding filter or as secondary filter. Or they can be used as pre-filtration unit by fitting to an external or a top filter.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 8.4 inch
Height : 3.2 inch
Length : 8.9 inch

Item Weight: 8.8 ounce (View shipping rates and policies)
Shipping Weight: 8.8 ounce (View shipping rates and policies)

ASIN : B01L8PXSNQ