Serious aquarists and pond keepers, listen up.

These filter socks are a game-changer for mechanical filtration.

Each one is 7 inches in diameter at the plastic ring (fits most standard sump holders) and 18 inches long, made from durable polypropylene felt.

The 25-micron rating means it catches super fine particles, helping to polish your water and keep it crystal clear by trapping debris, fish waste, and uneaten food before it breaks down.

This protects your pumps and other equipment from gunk.

They're built tough with heavy-duty stitching, so you can rinse them out and reuse them many times – just rinse, wash, and let dry.

Great for saltwater and freshwater aquariums, ponds, and even some industrial liquid filtration.

Comes in a handy 2-pack so you can rotate them while cleaning.