Hello to all,
Im new to this site as of today and in need of help. I recently had a free form plaster pool built in November of 2008 by Anthony and Sylvan. Less than a month after the plaster was completed the "pool school" guy came over and noticed blue hues in my white plaster. So the plaster was removed and new plaster put in. Approximately 2 months later I noticed brown to black colored stains developing in the corners of some of the steps and a few in the shallow end. A few weeks later I noticed the same type of stains developing in a different section of the shallow end and a couple in the deep end. I notified warranty division and they sent out the "plaster expert" along with an employee from the plaster company and they determined that the stains were "hydration stains". It was explained to me that the gunite must have had water or moisture on it when the plaster was redone thus causing the stains to leach into the plaster. I was advised to wait 9 months and that the stains would most likely go away and if not, they would do an acid rinse. I originally was satisfied with their explanation but Ive become somewhat angered as I observe that the stains have slightly spread and my soon to be ideal summer of entertaining and swimming are prematurely marred by emabarrasment.
So my question is somewhat compounded. Are these possible hydration stains or is this a metal issue? Is Anthony and Sylvan attempting at an educated guess in thier assessment? I would have provided pics of the stains but its 1 A.M. as of this post.
I inquired from the pool rep how they came to the conlusion that the stains were "hydration stains" to which I was advised that they "appear to be hydration stains".
As far as pool chemistry, I have checked the chemistry each weekend and have only had to add minimal amounts of muratic acide to bring down the Ph and Ta. I have taken samples to Leslie and Warehouse and have been informed that my hardness is low but, due to the newness of the plaster I needed to waite a few more months prior to treating for hardness. My chlorine levels are hardly traceable due to my use of an ozone filtration system. One issue that came to mind is the use of sequestrian agents. The first time my plaster was done the project manager provided me with jacks magic blue stuff in which I used. However, the second time my plaster was redone, the project manager failed to provide me with a sequestrian agent. Could this possibly have to do with the stains? Lastly, twice now a pool chair has blown into the pool and later recovered. Could this have added metals to the water thus causing the stains?
I apologize for such a long post, just new to this site and somewhat skeptical of the pool builders explanation.