Different set of numbers for fiberglass????????

[dansdad]

As you can tell I have a fiberglass pool and am seeing different numbers. Is there a set of numbers for a fiberglass? Such is ph 7.2-7.6 or maybe 7.5 or cya at what Thanks again Dave Gale

[Watermom]

Numbers should be the same.

[dansdad]

Thank you for responding