Reefer Filter Sock 225 Micron Felt Filter Bag 4″x10.5″

Reusable aquarium filter bags provide unsurpassed mechanical filtration. These 10.5″/26cm long filter bags for Red Sea’s REEFER and MAX-S aquariums will also fit any standard 4″/10cm filter bag holder.

225 micron felt filter bags are ideal for regular day to day use and enable a longer period between cleaning than with the 100 micron bags.