Just keep adding acid to keep the pH in the mid 7s until it stays there. It will settle eventually.
Btw, your chlorine level needs to come up with such high CYA. You should be trying to hold it around 12ppm and never let it get below 8ppm.
Alkalinity is only one of several parameters that determine the scaling potential or corrosivity pool water. Adjusted alkalinity is nothing more than the total alkalinity minus the cyanurate portion of the alkalinity. It is meant to give you a measure of the carbonate alkalinity (unless you have borates which adds to the alkalinity). So the adjusted alkalinity, or total alkalinity for that matter, doesn't mean anything all in its own.Thanks all for your inputs. The TA of the fill water is about 205 and PH as I said was about 8. Also, in the K-2006 test kit, the water chemistry booklet states that Taylor recommends to use Adjusted Alkalinity, so I am a bit confused. If the Alkalinity is too low, would that not impact the plaster finish etc?
Keep adding acid to move it back down. It will eventually stabilize. Faster if you do the TA lowering process.