Hi Viking;

I don't know the answer to your question, but I have some ideas. However, I'm going to ask Waterbear, who's worked with FG pools, to see if he has any ideas -- you may have to wait for his reply; he's sorta on vacation this week.

Meanwhile, please
(a) send me those pictures -- [email protected],
(b) get some Vitamin C tabs, and put some on some areas that are NOT white, and see if they lighten up.
(c) also, sit a small pile of them on WHITE faded area, and see if they have any effect over a 24 hour period.