temps? The actual plastering was accomplished with temp 45 to 50 with no tent/heat. However, during approximately half of the fill time the temp was < 40 and reached 33 with no tent / heat.
I guess just confirms your ideas.
I have a color similar to you (Wet Edge sapphire treasure) and I had a lot of “White” on my walls around the pool after installation. They weren’t streaks more like layers. I showed the company that installs Wet Edge in HOUSTON (Pool works) and they assured me it was normal. I was skeptical. I discontinued using the Orenda because it was sucking my free chlorine to zero (duplicated this three times). I switched to Jacks Purple stuff for SWG (not saying this was the solution and this is the only product I use that is not recommended by TFP) and I also physically went in with a piece of sandpaper and sanded this white stuff off by hand. it was not scale, that I’m sure off. It came off easily and it was powdered. Anyways this was very early on after installation. I also noticed my PB had left the CH out of range of what TFP recommends (not to mention other water chem levels for SWG) so I naturally raised that to 400. Now I have very little/no white “streaking” in my pool. I still personally have a hunch saltwater pools affect the platter differently than chlorine pools.
As a note my pool was plastered in March with temp in the 60’s
They should turn off your pumps and plug your return lines and skimmer. They dump acid in your water and setup pumps to churn the water around. Afterwards they need to raise the pH before they take the plugs out and turn on your pump.