CNZ Japanese Filter Mat Premium Grade Pad Media for Koi and Pond Filters 12" x 12", 6-Pack

Best filter I ever bought for my pond.I have a 12x12 submersible filter box and usually it gets clogged after a few days with hardly any flow. This filter has been in use for a week and still has max water flow.Just a 7' round pond with 30 koi but the water is very clear.

This stuff falls apart in water. What’s the point if it cannot get wet. It’s like it’s made out of cotton candy.

Maybe for a small pond, waterfeature or aquarium. They are dense and clog easily/quickly. Flimsy

Large surface area for biological filter