Good morning. We had our pool replastered with Super Blue Diamond Brite in early May of last year. We did everything we were instructed to do by the replastering company and religiously kept the water in balance all summer (we went through gallons and gallons of muriatic acid to keep the Ph under control). We then closed the pool for the winter as we normally do. We opened the pool last week as we normally do and it cleared up within a day or two. The water is now in balance according to the pool store test on Saturday morning. (FC = 2, TC =2, pH = 7.2, Hardness = 158, Alkalinity = 80, Cyanuric Acid = 37, Copper = 0, Iron = 0). I now know from reading TFP that these pool store tests aren't always accurate, but I don't have the TF-100 kit (yet), so these readings are the best I have right now.
The water is perfectly clear and everything looks good except the plaster. There are very rough (like sandpaper) and somewhat discolored spots all over the pool surface where the water level was dropped to for winterization. From reading various posts on TFP, I suspect this is calcium scaling due to the pH levels being out of control while the pool was closed. I don't know how we could have controlled this during the winter, but it is what it is and now we have to fix it. So what's the best way? I have read some posts that say to keep the water balanced and it will disappear over time, some say an acid wash is required, and some say an acid wash without draining the pool will do the trick (I don't think I can go that route because I cannot isolate the heater). Any suggestions are appreciated.
The water is perfectly clear and everything looks good except the plaster. There are very rough (like sandpaper) and somewhat discolored spots all over the pool surface where the water level was dropped to for winterization. From reading various posts on TFP, I suspect this is calcium scaling due to the pH levels being out of control while the pool was closed. I don't know how we could have controlled this during the winter, but it is what it is and now we have to fix it. So what's the best way? I have read some posts that say to keep the water balanced and it will disappear over time, some say an acid wash is required, and some say an acid wash without draining the pool will do the trick (I don't think I can go that route because I cannot isolate the heater). Any suggestions are appreciated.
