You're going to laugh at this, spoke to a guy who bought an Ionics system.
As him how much resin he uses as I heard on this forum that you can change
the vessel. Got told he does not use resin at all

He then said all that I change is the carbon filter and a brown filter

Did they not tell him anything at Ionics, also went on he has a 5yr guarantee
on the filter as he paid £2k extra.
That confused me more, just walked away.
Doug