08-21-2012, 07:01 AM
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I don't clean my filters more than twice a year, but I have huge filtration systems so I can go longer. Others are quite adement that that is terrible though, and say to do it every month.
Yes, it depends on the specifics of your tank. You will know how often you need to by examining te condition of the media when you clean the filter. I didn't start out going 6 months between cleanings. I used to clean them every month, but found it to be unnecessary so I stretched it out until the media could actually use a cleaning. Like I said earlier, if you clean the filter and the media is all gunked up and nasty, then you waited too long. If its fairly clean, then you could have left it longer.