Red Sea ReefMat 500 — 92 ft Replacement Fleece Roll for Automatic Roller Filter

The Red Sea replacement fleece roll for the ReefMat 500 is the official refill for your automatic roller filter: 28 m (92 ft) of 50 gsm non-woven polyester fleece — high-flow and skimmer friendly — the exact same fleece that ships with the unit.

Official Red Sea specifications

• Length: 28 m (92 ft)
• Width: 11.3 cm (4.4 in)
• 50 gsm non-woven polyester fleece, high-flow, skimmer friendly
• Made for the Red Sea ReefMat 500
• Roll changes happen without removing the filter from the sump or shutting off the pumps

How long does a roll last?

Red Sea publishes no fixed lifespan: consumption depends on your tank's bioload, feeding and stocking. If you see a number of weeks quoted elsewhere, it doesn't come from the manufacturer. The ReefBeat app tracks your real consumption, shows the days remaining and warns you before the roll runs out — keep a spare on hand so you're never caught short.

Frequently asked questions

Does this roll fit the other ReefMat models?

No — every model takes a roll cut to its exact width. This one is 11.3 cm wide for the ReefMat 500; the 250 roll is 8 cm and the 1200 roll is 17 cm.

How do I know when to change the roll on my ReefMat 500?

ReefBeat tells you: the End of Roll Monitor calculates the days remaining from your average usage, and the filter notifies you if the fleece runs out, tears or jams.

Do I need tools to change the roll?

No. Red Sea designed the system so the roll swaps out without pulling the ReefMat from the sump and without shutting off the pumps. To adapt your ReefMat 500 to specific plumbing, the Hose Connector Kit is sold separately.