Moisture/Mold in the basement

With us, the desiccant dryer took 3 weeks. But then it was dry.

3 weeks?! What did that cost? With us, the dryer pulls about 10 liters from the wall per day. The red bricks on the floor have also partially turned white. Does anyone know why that is?

One thing's for sure, the bricks are definitely much drier than before, you can see and especially feel that.

How long does the dryer have to run? Does the floor have to be completely dry?

With us, it also consumed about 10 liters per day. From an electricity standpoint, it was about a €100 "pleasure".

3 weeks?! How much did that cost? With us, the dryer pulls about 10 liters from the wall per day. The red stones on the floor have partially already turned white. Does anyone know why that is?

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The white stuff is probably lime, which remains after the water dries.

The white efflorescences can also be salts that the water has transported from the mortar to the surface through capillary action. This often happens with bricks as well, when they have become too wet during the construction phase or later. These efflorescences should only be removed mechanically and dry with a brush.