I have been using kalkwasser for a few months now and the results have been great. Last week I pulled the stirrer out and cleaned it then added new ro and kalk. Now it seems the kalk is not saturated and the ph is down and the alk readings seem down a little. The PH in the stirrer is also down where before it would read 12.2 it is now reading around 9. I have been trying to find a TDS meter to check that but can't find one local. Any insight to why is seems so different after cleaning the tube and stirrer. This is the second time I have cleaned it and the first time I didn't have any problems. Can the kalk go bad if the bag is not fully sealed?