I'm finally stain free !!

What I tried with the pool filled with water:
Jack's magic
Abscorbic acid
Oxalic Acid
Proteam Metal Magic
Various metal stain removing agents
Scrubbing
Vitamin c in a sock

Abscorbic acid was the most promising but it only lightened the stains a bit even after 20 lbs in a 7000 gallon pool.

What finally worked for me:

Drained pool
Sprayed sides and bottom with a 1 to 1 mix of muriatic acid/water.
Tougher areas got straight muriatic acid.
Rinse pool, drained whatever water was left.
Refilled pool and used a metal remover, sorry can't remember the brand but was used as a precaution.

Muriatic acid is nasty stuff and even with protective clothing on I got a few burns on my skin. 1 to 1 mix didn't smell that bad but the straight stuff had a gagging smell once applied and if it weren't for it being a good windy day when I did it, I'd probably be dead.

Not suggesting that anyone else drain their pool but for me after probably $600 in metal removers, scrubbing, mopping stuff on under water, etc. draining and spraying was a last resort and it worked beautifully. My pool and water look cleaner and brighter than ever. If I ever run into this problem again I'll be draining and spraying in an instant. It took one day from start to being full of clean water again.

Thanks everyone for all the suggestions and support.

Hoog