Fluval U4 Underwater Filter Foam Pad

Designed specifically for the U4 filter model, the Fluval Foam Pads capture large particles and debris for effective mechanical filtration, the crucial first stage in the filtration process. Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. For freshwater, marine or reptile environments. 2 pieces - 60 x 245 x 15 mm.