Removing calcium scale on vinyl liner

Welcome to TFP!!! :swim:

You have a rare occurrence here. There may be a few (read as limited options).

First can you describe "really bad," or take a picture. Solution depends on the size and scale (size) of the scale.

Also, how are you testing your water? Can you give us a full set of test results? Me may be able to change your chemical parameters of your pool and help.
 
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