Fluval U3 Underwater Filter Replacement Foam Pads help to filter water both mechanically and biologically. By using and replacing these pads on a regular basis, you can facilitate optimal performance from Fluval U Series UNderwaer Filters and achieve optimum water clarity and quality.
Features: Removes large particles
Intended For: Fluval U Series underwater filters
Size: 2 Count
Change insert regularly for optimum water clarity and quality.