Aquatic Experts Aquarium Filter Sponge - SpongeFirst Blue - Biological and Mechanical Aquarium Sponge Filter Pad for Clear Water, (Blue - 12" x 36" 20ppi)

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I love this re-usable filter material! It is great to clean the fine algae out of the pond. I just cut it, left it in filter box for 2 days, then clean it, and repeat. I have a block half round wall at the backside of my pond which makes it easy to clean--just spray off with water and flat bang it against the wall to dislodge particles until the water runs clear then place back in. Will be purchasing more when this runs out.

This is an excellent filter media. It traps and collects the smallest particles. It is very easy to cut for any size filter box. I highly recommend for your pond filtration!

If your sick of throwing money away on filters that don't work. This is what your looking for. With in 1 day my tank is near clear easy to cut easy to cleanI'm so happy . No more filters to buy ever

The foam was easy to cut to size, clean, and durable.

Been looking for 1” thick filter for my filter lint for my commercial machine for long time. This the perfect for it.

I love how clear our water became after only one day. Easy to clean with a hose and easy to cut and fit around the pump. I really like how long in between cleaning, the other clogged up daily.

Great filter! Cut it to whatever size you need in your aquarium. Don't waste your time with the cartridge filters from China. You can get way more filter volume for the good bacteria to grow in using foam. This filters is American made.

I love this fine sponge and it's washability