darkstefano The water is very hard. I haven’t checked the water report recently. My tap water TDS today is 356, the OZ’s TDS is in the 7-11 range. The tap water hardness varies by season. I have seen the TDS of our tap hitting 394 in the pastZ
The drop kit tested results on 20ml water and converted to 5ml standard today are as follows:
- Tap hardness is 358 mg/l
- Tap alkalinity didn’t test.
- The OZ hardness 4.475 mg/l
- The Oz alkalinity is 17.9 mg/l
Normally, we feed the tank with the remineralised cartridge. After every steam, we draw a small cup of water — an over kill. This can be once or twice a week. Flush out the water every month. My service boiler will always retain a third of water after flush. We steam 350ml milk a day and two times a day on week ends taking the number of steaming to 9 times a week.
We saw very tiny traces of scale after 8 months of use. We did a full flush of the service boiler by fitting a drain valve yesterday. This water showed a hardness of 4.475 mg/l and alkalinity of about 44.75 mg/l. So, what ever we did in the past is perfect and don’t think feeding the machine with remineralised RO will ever cause a problem.
However, as advised by Dave, we will feed a pure RO for the next 4-6 weeks to naturally reduce the scales, if any. After this period, we plan to make a concentrated potassium bicarb solution for the tank than using the re-mineralisation cartridge.
Hope it helps.