Ah right! cheers nathen , think I might ditch the resin and test the water. So do you just change your RO filters every couple of months or something?
Im probably doing this part wrong. I have a 450gpd ro system from purefreedom. So it came with 3 pre filters.
Because i had 2 spare 10" cases and a box of prefilters whrn i bought my setup from pf, ive changed ny setup.
I was suprised how much the sediment filter got dirty (nearly enough to stop u drinking water from the tap). So i now use two sediment filter (mostly to prolong life) then into a carbon filter and then into a fibredyne (?) Filter. I kno last fikter does job of the others, but like i said, they are spares. Want to prolong my last prefilter as the others cost pence in comparison.
Then i always back flush before i use ro for maybe 2/3mins.
The above may be over kill, but has been working for last 4mnths ok at mo