What is the best way to clean acrylic bathtubs and surrounds?

Grandma Beth
by Grandma Beth
I have been using environmentally approved products, which work fairly well, but take a ton of elbow grease. I am on well water and currently getting a pink residue build up. I’ve read that comes from an air born source - apparently not from iron, which would be a rust color ?? I’ve had the same cleaning problem before the pink showed up.

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