What is the calcium levels? Is ph high? sounds like a improper water balance recheck and balance the pools

Calcium is low at 100. Need to raise it.

Have you ever seen high chalking of the gel coat of a fiberglass pool?

If so what part of the chemistry was off, and what did you do to cure it? How long did it take?

Any high levels of chalking is indicative of very low calcium. Don't be surprised if the ladder treads break. Bring the calcium level to 200 ppm and hopefully, some restoration will occur. Unfortunately, once it comes off, it can't go back on, but maintaining proper calcium levels and keeping the pH in check (consistent high pH will result in calcium "drop out") can prevent further damage. Keep brushing with a nylon brush and if you've balance the water, it should be filtered out in a week or so.