water temparture

Has anyone heard of a temperature rating for vinyl liners? I have an inground vinyl liner pool and my pool supplies store owner (also was the builder) insists that I need to keep my temps in the mid-80s or lower to keep from ruining the liner. I'm having a hard time finding anything online to...

Hello All, We finished resurfacing and restarting the Spa and Pool 2 weeks ago. The pool and spa cleaning contact advised us not to heat the spa water for a month to prevent staining. He also suggested staining will happen gradually within 3 months of new plaster. We raised this question to the...