Moved post. Please start your own thread to ask questions rather than reuse someone else's thread. Butterfly
I have been reading all of your replies concerning questionable spots on plaster. Well I also have the blue quartz plaser and in the deep end are about 50 small spots and heres where I figured it out. The same spots were on the plastic main drain covers, so I started looking closer and there were 3 bb's corroded to the plastic. I super shocked my pool thinking it was algea which there was some on the walls. So, will the vitamin C work in my case? The PH is within ideal limits, it was a little high for awhile but trying to keep an eye on it now since its super hot here in Houston now. Thanks!