Unlike traditional filter socks with a plastick ring, these filter socks are great if you do not have a holder for them or if you want to tie them to the end of a hose/pipe. 
 
Helps Keep Water Clear
200 micron material helps make your water look crystal clear and helps reduce nutrients by removing free-floating debris.
 
Equipment Saver
Catches snails, algae and other large debris before it can enter your sump and damage your pumps and other equipment.
 
Reusable
These felt filter socks can be turned inside out, washed and used again.
Be sure to completely dry out sock before placing back into use on an aquarium.
 
Made in the U.S.A.
Made in the U.S.A. from high-quality, durable materials.