Stonescapes blue finish turned black

[fredpamm]

I am having a problem with my pool finish. It is stonescapes midnight blue and over the past several months it has turned black. I called several months ago to my pool service company about the problem and they came out to treat the pool with Jack's Magic. When they started the black stain was on the stairs and on the seating. Now its everywhere.

I have had several pool companies come out and have done numerous tests on it and all were negative. No black algae, no metal staining nothing.

I am told by the manufacturer that a corrosive water chemistry will turn it black. my service company has all the records and nothing indicates corrosive.

Has anyone else had this problem with Stonescapes pebble finishes?

[Teapot]

Welcome Fred,
I can't help on this, if various guys have been out and tested it then you have evidence of good water chemistry so back to the manufacturer and your home insurance legal cover by the sound of it.

[Denniswiseman]

Hi Fred
The problem is identifying what it is and that depends on the ability of the people testing it. I'm pretty amazed that these so called experts don't have an answer
It is always best to do your own testing (Taylor K2006C or TF100) but first crush some vitamin C (Ascorbic Acid) tablets and place on a stained areas on a step and also place a chlorine puck on the steps but away from it. If the puck clears it, it's algae, if the vitamin C clears it, it's metal
Can you supply a complete set of numbers (maybe from a pool store) so that we know exactly what state your pool is in
FC:
TC:
pH:
TA:
CH:
CYA:
BTW
What is the history of the pool and work done that could have caused it

[Teapot]

Yes Dennis, I agree, barely met any real experts. If they were testing for metals and they had already plated out (stained) then they are unlikely to show up Fred, only those in solution show up. As Dennis suggests give a vit C tab a go and a chlorine puck.