Polyester Felt Filter Sock — 4in Ring, 9in Short

High-quality polyester felt filter sock on a rigid plastic ring with handle — all aquarium-safe materials. Felt catches finer detritus than nylon mesh, making it ideal for polishing your water.

• Ring width: 4 inches — fits Bubble Magus and compatible ring holders
• Length: 9in short — ideal for shallow sump chambers
• Micron rating (choose above): 100µ (0.1mm) • 150µ (0.15mm) • 200µ (0.2mm)
• For marine, tropical and freshwater aquariums — perfect on the return pipe in your sump; also holds media such as activated carbon

UK business seller • 99.9% positive feedback • Fast dispatch from Leeds via Royal Mail • Message us any time — real UK support.