DavecUK Makes sense. It’s a good reminder to change after 1 year of use. The advantage of using the softened water in OZ is the readings are still very good indicating the filter is good for re-use. But, should change for hygiene reasons.
Look at my readings, after the filter change popped up.
Our unit turned to change filter after 13 months. It still reads 58 TDS, KH is 31.25 mg/l and GH is 13.43 mg/l.
We haven’t had time to change this today. Will do in the next few days.