20,000 gallon in ground pool, was re-plastered in 2014, now I have scale buildup on the plaster, the buildup feels like 80 grit sandpaper, probably started about a year after it was re-plastered, I've treated it during the colder months with Scaltec with little success. Where can I find the process of acid wash, drain and no drain options to remove scale, and ow long would it normally take for 1 person to accomplish the task if I have to drain the pool?
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