I have been reading all the posts over the last week, and finally got brave enough to try and remove the stains from the pool.

Pool Details:
IG Plaster, 15,000 Gal

I lowered pH to 6.8 (I kinda missed the 7.0 mark). Got rid of almost all the chlorine.. there was a little there, but it is definately gone now.

Then came 1 pound of Vitamin C.

And then 1 bottle of Metal out.

Not much happend after a couple hours, so I added another pound of Vitamin C, and a bottle of metal out.

It has been about 18 hours now and the stains are definately lighter, but I was under the impression they would be pretty much gone right away. Am I just impatient, or should I be doing something different?

Maybe I should add some more Vitamin C or Metal out? I didn't want to add it all at once, hoping to do it incrementally to I wouldn't have too much. Maybe that is where I went wrong.

Any thoughts and suggestions are appreciated..

David.