4/8 PCS 4 Inch Ring Filter Sock, Filter Sock Mesh Bag for Extra Fine Aquarium Filter Bag

4 Inch Ring Filter Socks – Fits common sump and overflow systems in freshwater and saltwater aquariums.

Efficient Debris Capture – Helps trap uneaten food, waste, and particles to keep water clean and ease filter load.

Reusable Design – Strong structure with tight stitching allows for multiple washes and extended use.

Noise & Splash Control – Helps minimize splashing and water sound in overflow filtration setups.

Versatile Use – Ideal for reef tanks, aquaculture, planted tanks, and ornamental fish systems.