Aquarium Bio Sponge Filter Media Pad Open Cell Foam Cut-to-fit Matten Filter Fish Tank Sump Divider 23.6" x 17" x 2"

Heavy duty filter media for my pond, big enough to cover the entire skimmer basket. Should stand up to use for at least a year or two of course need to clean it periodically.

Nice filter media. Seller had an out of stock issue with a particular color and promptly contacted me. Issue was resolved and products shipped. Packaging was great as to not deform the sponges. Can’t speak to the operation yet, but compared to much more expensive products, I will purchase these again.

Using this sponge material to replace the 200 micron socks on my reef tank. It's definitely more porus than socks and does not polish the water nearly as well. I feel it's a good alternative to no socks. It does a good job of filtering out larger particles.

easy to clean, strong enough to stand up and dense enough to get small water particles.

2 inches thick so very thick depending on aquariumgood product