Quote Originally Posted by BigDave View Post
Do you know your pH? If it's been low, you could be removing copper from your heater. I also wouldn't be surprised if some of the other products have copper in them. Copper is also likely to build up in the pool (until it comes out on your hair).
Yes, I do know the pH of my pool, and also the alkalinity. pH is at 7.7 alkalinity 130. Seems good to me. Where can I find the information about easy pool care?