okay okay okay.....
ur setup...hmm...IMO not so good.. I know you can do anything to a canister ..but if you don't know what to use..it will clogg and prevent water flow...
Mine 205 is strong as hell and I have it up to the lowest setting (lever)..
my setup...starting from the bottom up
1. Lots of fluval prefilter (to get all the debris and large particlue trap first..i full almost max)
2. middle one...fuval bio ball with matrix (half and half)
3. top: matrix fill good enought to have room for the fine filter ..fine filter sits ontop fo the blue holder ( I cut my own fine filter)
my last cleaning was on 7/10/12...yes i write down when i clean it because i can go even longer...its might be due in spring or next year