Resin finally gave in after 15 months !!!

[koopmaster]

My pipes are frozen and I suspect my filters are cold in the van but I need to fill my tank so I turned it on and went to test it. The tds was 25.. so I chucked the 15l out of the resin canister and filled the new stuff. Down to 3 now and I think it will go lower after half a hours running.

I haven't changed it since I bought it in September 2015 ish give or take a few weeks...