Features:

The 200 Micron filter socks can trap uneaten food,sand,coral and other smaller OM.,effectively improve water quality, Plus the filter socks can also reduces noise and splash in sump.
The felt filter socks is with solid stitching,so the filters socks are very strong and durable,which can be reused for many times for a very long time.
Professional Aquarium Filter Socks can offer powerful filtering function when it filtering your tank water.
Premium Aquatic Filter Bags are technological choice for your aquarium fish tank care work.
They are stitching well, have strong construction and condition that be use several times.
Improve Aquarium Water Quality. With these premium filter socks, they can filter water impurities, fish droppings and other residual impurities well in the fish tank.

Specifications:

200 Micron
4" Ring X 15" Length

Package Include:

4 x 4 inch ring by 14 inch long 200 micron felt filter socks

Tips:

To improve water quality,you had better change the filters socks once a week.
The felt filter socks are reuseable,pls just clean the felter socks with no worry.