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I live in New England and have a lot of iron in my water and every time I take a shower I noticed the walls of my fiberglass shower keep getting orange. How do I get rid of the hard water stains on my shower walls?
Question, is your water piping iron or steel. or does the orange come from the water itself.
Try spraying on a 50/50 mix of water and white vingar. Soak it well and let it sit for awhile before scrubbing. May have to repeat several times.
You could also try a paste of Borax but you could scratch the fiberglass if you're not careful.