Package Dimensions : 36.78 x 15.49 x 13 cm; 848 Grams
ASIN : B07JW88XYV
Product Features :
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: 4.5?D x 8.0?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.