I had my pool acid washed on Friday based upon this guys recommendation after he did an acid test on the top step using pcv pipe. For the acid wash, he was in the pool for about an hour (small pool - 6000 gallons). I drained it myself before hand. It didn't make a bit of difference (I've since found out that it's iron that's staining the pool). He then left the pool with approximately 40 gallons of water left in the bowl mixed with 3 or 4 gallons of muriatic acid. He didn't return for about 36 hours. Upon another guys recommendation we dumped several pounds of baking soda into that mixture in the bowl and man did it fizz up. Then we filled the pool and we are working on getting back up to proper ph. My question is, do you think this damaged the pool where that mixture sat? The water is still cloudy so we can't see the area of the deep end in question. Thanks for any responses in advance!