CIF Corner Internal Filter Foams

Took a while to squeeze it into the corner unit, but once seated it holds its shape perfectly and the water flow is noticeably steadier than with the old, flattened sponge.

Flow in my corner filter picked right back up after I dropped this foam in, which tells me the fit is spot on. The sponge holds its shape instead of squashing under the pump, so I'm not squeezing it flat every week. Cheap fix for something that was driving me nuts.

Had to swap out the old foam because it had collapsed and the flow dropped to a dribble. This replacement fits the corner slot exactly and the filter's running strong again — just what I needed.