FAQ: How often do I need to rinse or replace Seachem Matrix™?

Matrix™ is a biomedia, meaning it does not exhaust over time, so you should never need to replace it. That said it is possible for Matrix media to become clogged up with detritus and slime, so we recommend regular filter maintenance to ensure it continues working as efficiently as possible. The frequency with which a canister filter needs to be opened and cleaned out varies from tank to tank, but a good starting point is once a month.