I installed a fiberglass pool 2 years ago and noticed all the flat rough surfaces appeared to be fading. I was then told by the pool installer that it was a calcium buildup and it could be scrubbed off. I have tried numerous scale removing solutions including Jacks Magic but it hasn't budged. I was able to drain the pool to below the first step. Once the step dried it was almost completely white but all the walls were still a nice dark blue. I tried putting muratic acid on a small section of the step to see if it would come off but no luck. The white film is smooth to the touch. Any advice?

I have a 36'x16' Lexington fiberglass pool with a 10' hot tub with spillover. I'm using a copper system and only had to use muratic acid to adjust the pH and Clorox as a sanitizer once a week. The pool has always been crystal clear since installed.

Thanks,
Randy Babin