AQUANEAT Aquarium Bio Sponge Foam Filter Media Pad Cut-to-fit for Fish Tank Sump Pond 17" x 11" x 1/2" to 1"

They seem to be working great so far. I cut mine in half and doubled them in my filter sump. Just naked sure to soak. I've seen reviews complaining about the size and shape but I haven't had any issues. As Advertised!

Good foam pads for filtration! Can cut to fit and fits my biggest canister filter ...gives lots of room for beneficial bacteria to grow on and helps the water to stay clean , just rinse in separate container of aquarium water and return to canister .

I’m using this on my Fluval FX 6’s this is absolutely great filter media if you want you filters to run more efficiently. Just follow the instructions and soak the product from shipping then cut it to what size you need.

Easy to cut and fit to my filters for my pond. Easy to clean too which is unusual. The first two, the blue and the green rinse out very easily. Of course the fine filter, black, takes longer. I'm glad I got this.

Exactly what I was looking for

large foam definitely suits canister filters or cut down to a hang on back. love this stuff! all three colors come in different density.

Since these come extremely compressed, they did open up to normal size, but it took overnight, which is fine. They're good sponges.

These pads seem a bit thin useable but not an equivalent in quality.