Penn-Plax Cascade 150 or 200 GPH Hang On Filter Aquarium Bio Sponge Replacement; 1 Pack; Cut to fit Cascade 150 or 200

I mean what do you say, "it works"

Item arrived promptly and as described. I have a hard time finding this size sponge locally. When they do get them in, they run out quickly. This is a great alternative to paying more at your local store.

Seller was great, received exactly when promised. Fits my cascade filter perfectly.

This is about 3 1/4" x 5 1/4" and about a half-inch thick. You can pull it apart and have 2 filters, if you prefer a thinner filter. Works as good as the original that came with the filter box.

I've been looking for these replacement filters EVERYWHERE! I am so glad I found them here. I was almost ready to just get another waterfall filter. I will be getting these again. Perfect.

Bought as a replacement for the filter I purchased. I imagine it will work fine as my current sponge is doing its job well. A little expensive but a necessary piece to my filter.

got it, it works

Works great

Si me gusta porque funciona clean mi acuario, lo compre porque lo recomendaron en YouTube y la verdad es cierto. Lo súper recomiendo

Good filter quality. Does as expected.

Buena, pensé que serían más, pero solamente es una la que viene por paquete.

Works great

Not sure why I thought these were bigger and meant to be cut to size. Must have mixed it with another item as I shopped. They are small, suit the purpose. Two fit inside my 30g aquariums filter easily.