Quote Originally Posted by mbar
I also read somewhere that "Fiberglass has a negative electrical charge and can attract positively charged metallic ions, causing the development of a stain. The periodic addition of a metal treatment should help negate this effect and help keep pool stain free. " I don't know if any of this is true - but it would seem to be a reason that the fiberglass stains so easily.
Can you substantiate this in any way? I would be interested in knowing where this statement came from.