The purolite resin was excellent 1st bag lasted over 2yrs 2nd bag which had been left outside lasted over 1 yr and my water usage had gone by at least 50%.
Tried tulsion from Da qua this was ok lasted 12 month but didn't stay at 0 tds for long
Tried the ionics would not even bring tds to 0 sent it back tried the indion from vyair this is also garbage now got replacement bag of tulsion from ionics not good .