Vivid Creative NOSOK Filter Sock Replacement - 7 Inch The Vivid Creative NOSOK Filter Sock Replacement - 7 Inch is a reusable mechanical filtration upgrade for compatible round 7-inch aquarium filter sock holders. Instead of repeatedly washing standard filter socks, the NOSOK700 lets you run the included 255-micron nylon screen or wrap the filter core with disposable filter floss for simple, customizable debris removal. NOSOK700 Filter Sock Alternative for Large Sumps Designed for aquariums that use larger 7-inch filter socks, the NOSOK700 combines the open access of a filter cup with a deeper cage and reusable screen. It is especially useful for reef and marine systems where mechanical filtration needs to be serviced often, but washing fabric socks has become a maintenance chore. Flexible 7-Inch Mechanical Filtration Options Replaces compatible round 7-inch aquarium filter socks Can be used with the included heavy-duty 255-micron nylon filter screen Filter core can be wrapped with inexpensive filter floss for disposable mechanical filtration Reusable screen unrolls flat for quick rinsing under running water Allows filter floss to be discarded and replaced instead of washing dirty socks Provides a simpler alternative to fleece rollers for many sump setups Vivid Creative NOSOK700 Fit and Clearance Details Product model: NOSOK700 Compatible holder type: round 7-inch filter sock holders Minimum mounting hole diameter: 6.18 inches (157 mm) Mounting diameter range: 6.5 to 7 inches with included adapter Filter cage length: 5.25 inches 255-micron screen flat size: 18.5 x 4.5 inches Approximate filtration surface: 83.5 square inches Maximum filter media thickness: approximately 1 inch Installing and Servicing the 7-Inch NOSOK Confirm that the sump uses a compatible round 7-inch filter sock opening with enough clearance for the NOSOK700 cage. Install the NOSOK so drain water passes through the cage and selected filtration material. Use the included nylon screen for reusable 255-micron filtration, or wrap the filter core with filter floss for disposable filtration. Inspect the screen or floss regularly and service it when debris buildup begins to restrict water flow. Rinse the nylon screen under running water or discard and replace used filter floss as needed. What’s Included Vivid Creative Aquatics NOSOK700 7-inch filter sock replacement kit Filter cage Filter core 255-micron nylon filter screen insert Mounting adapter Important Notes Filter floss, filter sponge, poly filter, and other disposable media are not included. Check sump opening size, water level, drain layout, and available clearance before purchase.