Cartridge filter replacement

Oct 6, 2018
42
Bay City, MI
I was just wondering how often does everyone replace their filters. My spa has one filter in it and I have another one on reserve for when I clean the one that is in it. Next month both filters will be a year old. The filter is never really dirty when I clean it (about every two weeks) and I have chemically cleaned both filters one time since I started using them. Just wondering what everyone’s thoughts were on this topic.
 
My last set of filters lasted about 10 years. The caps split open.

I wouldn't replace them unless they are torn or broken somewhere.
 
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