Seachem "The Bag"
The Bag is an innovative welded filter bag with a durable non-stitched seam. It has a 180 micron mesh, is resistant to bleach, caustics, and acids, and comes with a convenient resealable locking closure. It is available in a convenient 5" x 10" size. It is ideal for all filtration products and has an exceptionally long life.
Used @ AquaCorals!
I use these bags for the ROX Reef Carbon used at AquaCorals.