how often do you clean a cannister?

Totally depends on how many and what sort of fish you've got.
 
If there is sucha thing as an 'average' aquarium and fish load, I'd say every 3 weeks is a good idea. We are alternating on the 2 canisters we have, and clean one each week at the time we do the water change.
 
I clean my Eheim about once every 2 months, right after I do a 50% water change.
 
I do 1/2 of mine one week, then the other 1/2 the next week. IMHO it makes cleaning the canister quicker and easier than being left to clean after a month or so of use.
 
Originally posted by Mrditty
I have three and I clean 1 every 4 months on a rotating basis.

80gJoe either you are way anal or have way to much time on your hands.
;)
We have Discus and need to make sure we have exceptional water........
And why not provide your fish the best water you possibly can? :)
Come on --- what's the going rate on filter floss?? And - a little extra time on the maintanence?

I suggest for those that go 2 months (and even more...) without at least 'checking' to see how much 'build-up' is in there, to try after 1 month. You are also losing suction and effectiveness having a clogged filter.
 
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