Residue on Vinyl floor

In my greenhouse I have vinyl "gym" flooring. In areas under a fountain and near the sink there is a white residue probably from minerals in the water. The area by the fountain does not get wet but minerals evaporated into the air apparently settle onto floor and adjacent window glass. (I notice the same effect near my vaporizing humidifier in the bedroom. Both the fountain and the vaporizer use tap water.) The spots by the sink are spills and may also have some insecticide in them. I need some suggestions about cleaning them and a finish for the vinyl.



Area below fountain. The darker area has been brush scrubbed with white vinegar and rinsed and is dry.

Close up of boundary between scrubbed and not scrubbed areas showing some residue.

Area near sink. These spots do come off when scrubbed with soap, water and fingernail.

Once this residue is removed, what type of finish should go on the vinyl to brighten it and make the appearance consistent across the entire floor? The floor is under plant benches for water resistance and is not a walked-on surface.

 

Even tap water has some minerals, so that would be calcium. A vinegar solution or any of the bathroom cleaners, like CLR, will remove.

 

I found some wax stripper in my stash. Then I Googled for a final finish. Coincidentally they turned out to be from the same manufacturer.



Final result after two applications of stripper and two coats of finish.

I still have about half a bottle of each. Good for the next 20 years based on my historical schedule of maintaining this floor.