Hard water

Where I live we have extremely mineral rich water that leaves deposits. My filter system doesn’t catch everything.

Is there a way to add anything to the tank to deal with these deposits and prevent the issue that will happen.

Buying distilled water is cost prohibitive and would cost me more than the vacuum after 8 months.

Or is there a way I can manually clean the robot and the dock water system.

I use distilled water in my tank.

I have the same problem. We tried distilled water and had to stop because it was getting expensive. I came here to look for a solution or recommendations on what to try.