ASF Filter Sock 200 Micron

Description

ASF Filter Sock 200 Micron — Coarser sump sock that traps debris while lasting longer between changes

A fine filter sock that overflows after two days is a chore, and on a busy tank a coarser grade often does the job with far less fuss. ASF Filter Sock 200 Micron (SKU: ASF-217069) is the 200 micron filter sock from Aquarium Systems, a mechanical filter that sits in a sock holder beneath the overflow drain and catches detritus, uneaten food and loose particles before the water reaches the rest of the sump. At 200 microns the mesh is twice as open as the 100 micron grade, so it lets the finest suspended matter pass but keeps flowing for longer before it needs to come out.

That longer interval is the reason to choose it. Heavily fed fish tanks, systems with high flow through the overflow and tanks with a lot of sand being stirred up all load a sock quickly, and the 200 micron grade copes with that load without backing up as soon. It still keeps visible debris, food and algae fragments out of the skimmer section and off the sump floor. Some keepers run it as everyday filtration and fit a 100 micron sock for a few days when they want to polish the water. Check that the ring suits the sump’s sock holder, and keep a spare so one can be washed while the other is in use. Even a coarse sock holds trapped waste that keeps breaking down, so it should still come out on a set routine rather than only when it overflows.

Usage & Application

When to Use

• Everyday sump filtration: General debris removal with longer service between changes.
• High-flow overflows: Systems where a fine sock clogs and bypasses too quickly.
• Heavy feeders: Fish-only marine and large freshwater tanks with plenty of waste.
• Sand-bed tanks: Catching material lifted during cleaning and aquascaping.

Placement & Usage Guide

• Seat it securely: Push the sock ring fully into the holder below the drain.
• Watch the level: Replace it when water starts rising inside the sock.
• Clean it well: Rinse out waste, turn inside out and wash without detergent.
• Keep a spare: Rotate two socks so filtration never stops.

Product Specifications & Highlights

Key Features

• 200 micron mesh: Coarser grade for general debris capture.
• Longer change interval: Slower to clog than a 100 micron sock.
• Protects the sump: Keeps food and detritus out of the skimmer section.
• Washable: Reused through many cleaning cycles.
• Pairs with 100 micron: Swap to the finer grade for polishing.

Product Details

• Brand: ASF (Aquarium Systems, France)
• SKU: ASF-217069
• Product Type: Filter Media > Filter Sock
• Filtration Rating: 200 micron
• Function: Mechanical pre-filtration at the overflow drain
• Mounting: Filter sock holder (confirm ring fit)
• Care: Rinse, invert and wash without detergent; rotate spares
• Other Sizes: ASF Filter Sock 100 Micron (ASF-217068)
• Target Environment: Marine and freshwater sump systems