Case (50) 4” x 14” BRS Felt Filter Sock with Plastic Ring (DO NOT USE)

4″ x 14″ Felt Filter Socks are used on overflows to remove small floating particles from aquarium water. This can dramatically improve water quality and reduce maintenance on filters that would otherwise become clogged. How fast do you go through filter socks?

• 50 – 4″ x 14″ Felt with Plastic Ring
• 200 Micron
• Plastic ring fits common sump holders
• Felt is better at removing particles but can clog faster than mesh