Shower Door Calgary How Do I Clean Stubborn Water Stains From A Glass Shower Door?

How do I clean stubborn water stains from a glass shower door? - shower door calgary

We rent this house, and I know that has its history a few years ago, no one bothered to was the glass shower door.

I tried the following products:

Lysol Soap Scum Remover
CLR
LimeAway
Vinegar and water
Comet Cleaners
Toothpaste
A razor blade

Nothing works! If I buy the house, just to go have another glass door lol ... is a nice shower and a nice house, but I do not want to invest money into it, I know what I mean?

Suggestions would be great (well, taken with the exception of the door and call the owner lol), thank you!