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Replacement Flex-Matala mats for the BioSteps filter
Pre-cut mats in the three densities the BioSteps uses: green (FSM290), blue (FSM365) and gray (FSM460). The filter holds two of each; replace them one pair at a time so you never lose your bacteria colony.
Image coming soon
Mystic Koi’s take
Honestly, Matala lasts for years — most people replace a mat because a raccoon shredded it, not because it wore out. Rinse in pond water, never tap.
Mats
| Part # | Color | Density | Position in filter |
|---|---|---|---|
| BS201015 | Green | 290 m²/m³ | First (inlet) |
| BS201016 | Blue | 365 m²/m³ | Middle |
| BS201017 | Gray | 460 m²/m³ | Last (outlet) |
Priced at Matala MSRP (spare-parts list).
Pairs well with
Questions we get about the BioSteps media
Do these fit the original BioSteps 10?
Yes — the mat size is shared between the original BioSteps 10 and the BioSteps II.
Matala at Mystic Koi
Matala filter media and pond equipment have been a koi-keeping staple for decades, and Mystic Koi has sold and run Matala gear in our own systems since we opened in Upland, California in 1996. Everything on this page ships from Matala USA (Sea Life Designs) or our ¾-acre facility. Not sure what fits your pond? Call or visit and we’ll size it with you.