Aquatic Experts Felt Filter Socks – 4 Inch Ring Style, 100 Micron Aquarium Filter Sock for Sumps & Aquariums (4" x 8", 8 Pack)

About this item

• RING STYLE – FITS STANDARD FILTER CUPS: These felt aquarium filter socks feature a smooth molded plastic ring designed to fit standard filter cups and holders commonly used in sump systems, and they are not compatible with Red Sea filter trays.
• 100 MICRON FELT FOR MECHANICAL FILTRATION: Made from dense polyester felt, these sump filter socks provide reliable mechanical filtration by capturing fine particles such as uneaten food, fish waste, detritus, and debris.
• DURABLE, REUSABLE CONSTRUCTION: Heavy duty felt material maintains its shape and filtration performance through multiple cleanings, offering a long lasting filter media option trusted by aquarium owners and service professionals.
• IMPROVES WATER CLARITY: Interlocking micro denier fibers trap suspended particles before they break down, helping maintain cleaner, clearer water in both saltwater and freshwater aquariums.
• EASY MAINTENANCE: These filter socks can be cleaned and reused multiple times, and regularly replacing or cleaning them supports strong mechanical filtration and consistent sump performance.