I finally was able to snap a good picture of this. We have a Tahoe Blue Quartzscape finish. There are a few areas of the pool where the Quartzscape finish literally looks like they missed that spot when powerwashing. It like when you powerwash anything - you can clearly tell where you missed. The pool builder said he thought it was calcium buildup and recommended an acid bath. I disagree. It didn't "build up" and the areas from what I can tell feel exactly the same as the other areas - they're smooth.
What do you guys think? Could it be cement leaching? Or something else? You can only tell when the sun is not out so it doesn't bother me that much. I just wish they had done a better job.
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