After having our pool re-plastered in March, the pool guy came out w/ FOUR gals of Muratic Acid. He said he had been told to put in 8 gals, but only had 4 gals on his truck..... Well, we never got the big dust clouds when brushing daily, just small amounts. After the initial 4 gals, we kept adding the acid to keep the ph knocked down, as per instructions. The question is, would the initial start-up w/ 4 gals do any damage to the new plaster??? Or, what are the pros and cons of having a start-up like this? Love this site, Joyce