Miele dishwasher - something is not right
We have had a Miele Dimension for a little over a month. At the beginning, it cleaned spectacularly well. On some days, it still cleans spectacularly well. But most other days now with no rhyme or reason, things come out spotty and sometimes greasy-looking. Some days, there is almost a powdery residue on glassware or plasticware.
We were using old detergent so we bought a new box of Finish (powder, not tablets). The rinse aid dispenser is full. We use Ecover for rinse aid. The bottle is a few months old. I cleaned the filter, which didn't really have anything in it, but it was a little icky as the filter can get. There is VERY little water at the bottom of the unit. My previous Bosch always had about an inch of water in the bottom of it at all times, but this is less than half that. I don't know if that's a sign of anything.
Please help! I want to love this dishwasher and on the days it cleans well, it is spectacular- it cleaned the coffee residue right out of my very old stainless thermal mug, and glassware gleams.