What You Will Receive: A package of 10 pcs white filter bags, whose size is 7.7x3"(LxW) , the mesh hole is about 0.15mm extra fine mesh, which is more suitable for extra small media.

Great Filter Media Bags: Plastic zipper design, no worry about rusting or producing harmful substances. Close tight to prevent loose media from potentially causing damage to your water pump or power filter's motor. The bag is nylon and completely safe for both fresh and saltwater aquariums.

Refillable and Durable: These well-made filter media bags with sturdy top zipper design make media changes easy, easy to empty out as well as restuff. Made of high quality nylon so our mesh filter bags are durable for years use and completely safe for both fresh and saltwater aquariums. Note: do not overstuff the media in the filter bag to let water flows through the media easily!

Fit for Most Extra Small Media Items: Designed for filtration applications, our zippered mesh bags work great for holding extra small media items, such as Nitrate, Phosphate, Ammonia Adsorption Media and Organic and Nitrate Resins. Aiming to bring us a spotless tank.

Multi Use Possibilities: Stuff the crushed coral in mesh bags to maintain ph levels; place mosquitoes bits in the aquarium nets to get rid of the annoying fungus gnats and their eggs in soil. They can not only used in canister filter system, but work great as laundry bags, storage bags. More ways for you to discover!