when to clean canisters

[firedragon92]

hey guys i am going to be setting up my eheim 2215 canister filter that i have had lying around for a while and was just wondering how often canisters need to be cleaned

[wombat1100]

Have a read of this thread mate
http://www.thefishtank.com.au/forums/showthread.php?t=82
Dazz

[firedragon92]

thanks buddy