Hi
I took one of your pics and circled an area. That is what the National Plasterers Council (when I had this problem) called normal cloud-like appearance of dark plaster dye, as the cream cannot be distributed evenly.
Also included the document from my contract.
We decided to skip the acid wash as builder said improvement might be only 50% and would shorten the life of the plaster somewhat. But was tough call and I suspect there is no "right" answer.
I do wish we had received a sample prior demonstrating the cloud-like appearance instead of the one we received which was uniform.
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