Write this out 100 times:
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
YOU DO NOT CLEAN A FILTER AS A MATTER OF COURSE
You only need to maintain a filter to remove blockage.... otherwise you risk killing the bacteria we spent so long encouraging... when you first setup the filter, did you notice the amount of water flow that was returning to the tank ? as a general rule of thumb, when this has dropped to about half the flowrate (or in my case when I notice the lack of flow !
) THEN and ONLY then is time to strip it.
The only bit thats going to be clogged normally is the sponge pads... unless a fish is trapped in a pipe (been known !) then all you need to do is syphon a bucket of tank water (ONLY tank water) and give the media a good swilling to remove the bulk of the muck, then do the same with the sponge pads... unless the fine one is really clogged, then replace it.