Specifically designed for the Fluval U3 & U4  filter, the Bio-Foam Pad captures large particles and debris for effective mechanical filtration.
	
Mechanical filter media
	
Fits perfectly inside the filter chamber to prevent debris from escaping
	
Ideal pore size allows efficient water flow, less clogging and long-lasting filtration
	
Suitable for freshwater, saltwater or reptile environments
	
Convenient 2-pack format