Filter media replacing

[prodrive]

Hi guys,
would like to ask how frequent should we change filter medias? Or is it don't have to change? I'm using eheim 2215 with eheim mech and substrate pro?
Thanks

[zhou yuande]

I am also using eheim substrat pro and eheim mech. I have not changed since using them 8 years ago.

[limz_777]

there is no need to replace the media , just rinse it

[Misty]

Filter medias will start to breakdown and clog after sometime. I would change my medias once I see some breaking down.

[stormhawk]

A good rinsing in old tank water is all you need to do. Don't have to change or replace the media unless it is the fine filter pad. Having a pre-filter over your intake pipe, like a sponge pre-filter, cuts down on the maintenance for the filter media itself. All you need to do is to maintain the pre-filter whenever it clogs. Turn off the filter, rinse the pre-filter at your tap or with old tank water and replace it back on the intake pipe then turn the filter back on.