Red Sea Max Nano 100 Micron Thin Mesh Filter Sock (2 Units)

Replacement 100 Micron Thin-Mesh Filter Socks for the Red Sea Max Nano aquarium. This pack includes 2 socks sized specifically to fit the Max Nano sump. The 100-micron mesh captures fine particles — great for polishing water clarity in an established reef.

Also available: Red Sea Max Nano 225 Micron (2 Units) for a coarser catch, and the Red Sea 225 Micron Filter Sock for REEFER & MAX if you have a larger Red Sea system.

Browse more filter media in our Filter Media & Cartridges collection.

• 2 replacement filter socks per pack
• 100-micron thin mesh — captures fine particulate matter
• Sized specifically for the Red Sea Max Nano sump
• Reusable — rinse or machine-wash clean
• High-quality stitched construction for durability

• 100 micron (this product) — finer filtration, best for polishing an already-clean system and trapping fine particulate
• 225 micron (see it here) — coarser, flows faster, best for newer tanks or heavier bioloads where you want less restriction

Will this fit my Red Sea REEFER or MAX?
No — this sock is sized for the Max Nano only. For REEFER / MAX systems, use the REEFER/MAX Thin-Mesh Filter Sock.

How often should I change filter socks?
Every 3–7 days depending on bioload. The longer they sit, the more they become a nitrate source.

Are they reusable?
Yes — rinse thoroughly or machine-wash (cold, no detergent fragrance). Replace once the fibers break down or stop cleaning up properly.