Maurice Posted April 26, 2017 Report Share Posted April 26, 2017 Howzat guys, I am sure this has been covered before but was wondering how long do you wait before you change your RO filter blocks, membrane and DI resin? I understand it depends on your tap water quality, but was wondering do you guys say change every year....2 or so? My TDS has slowly been creeping up and standing at around 12 and I can see the breeding has slowly decreased in all of my shrimps The filter has been running for aproxamately a year and a half, so think it is time to change the blocks, membrane and DI resin Quote Link to comment Share on other sites More sharing options...
Chadfarmer Posted April 26, 2017 Report Share Posted April 26, 2017 Membrane 2 years all depends on useage but just a good measure to start with. Unless u run dual membrane i would change 2nd membrane yearly. Quote Link to comment Share on other sites More sharing options...
Chadfarmer Posted April 26, 2017 Report Share Posted April 26, 2017 Carbon and other filer i would say 6 months to 8. Di usually when tds goes up. Short cycling will cause tds creep judt so u know let run for a few mins before checking Quote Link to comment Share on other sites More sharing options...
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