I have a 75g that houses my KML FH filtered by two emperor 400's and an ehiem 2213 canister filter. I clean the HOB's twice a month but I was wondering how often should I clean the canister which is stictly used for mechanical and bio filtration, there is no carbon inside. All suggestions will be greatly appreciated...
Oh yea and here's a pic of my boy...
Oh yea and here's a pic of my boy...
