Firing up SWG for the first time.

On to another issue. Could the high CH and PH have caused this white scale look on my plaster? It's not as noticeable whit the water in the pool but very noticeable now. Should I consider an acid wash?
Yes, both those combined can encourage scale buildup. Some folks will just lower their pH to low range, and keep a negative CSI number and over time slowly it helps it.

Acid washes remove years from a plaster surface lifespan. Use judiciously if ever.

Maddie :flower:
 
Are you talking about the white at the tile line?? That's more like efflorescence
 
Your pool needs to be fully circulated before taking any samples for chemistry. The water will stratify over winter and taking a water sample from the top of a winterized pool will give you false data.
 
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