Seachem Matrix Bio Media (1 L)
$17.86
The buy-it-once biological media: a porous ceramic with enormous high surface area for bacterial colonisation, inside and out. Rinse and reuse for years — it never needs replacing.
Pros
- Enormous high surface area — porous ceramic that hosts biological colonisation inside each piece as well as on the surface
- Internal pores support anaerobic bacteria too, giving some nitrate reduction a solid rock cannot
- Rinse and reuse indefinitely — it lasts years and does not break down, so you never rebuy
- Universal — fits most canisters, hang-on-backs and sumps, and comes loose to fill any basket
Cons
- Light, chalky pebbles are dusty — rinse well before first use
- Does not come in a media bag; you supply your own
Score breakdown
Specifications
| Media Type | Biological (porous ceramic) |
|---|---|
| Surface Area | ~700 m2/L |
| Volume | 1 Liter |
| Replacement Interval | None - permanent |
| Reusable | Yes - rinse and reuse |
| Lifespan | Years / indefinite |
| Compatible With | Any filter (canister, HOB, sump) |
| Format | Loose media |
| Dimensions | ~10 mm pieces |
Alternatives
$19.99 · 94 / 100A+
Ceramic ring bio media with a porous internal maze for fast bacterial colonisation. Universal, well-priced and reusable — a proven default for any filter.
$9.19 · 92 / 100A+
A rechargeable synthetic resin that polishes water to a sparkle and pulls out organic waste before it becomes nitrate. Bleach-regenerate it and reuse — not a single-use carbon.
$11.46 · 90 / 100A
Classic bulk activated carbon for removing tint, odour and leftover medications. A jug this size refills a hang-on-back for a fraction of the cost of branded carbon cartridges.
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