STMA,

I'm feeling real confident with what I've accomplished with my 'Metal infected' pool so I'm going to chime in, I've been 'Clean' for about 1 week now. I'm not sure if you are still looking for suggestions on your next steps but this is what I would reccomend.

1. Post your chemistry numbers.
2. Make sure you've got enough Metal Sequesterant on hand.

If you are going to try and tackle the FC not holding by getting to shock, I would suggest the following:
1. get your PH to 7.0
2. Let your FC drop to about 1.0
3. Add a maintenance dose of the Sequesterant (I say maintenance dose because you've already added it within a few days).
4. Let it circulate for a few hours.
5. Gradually bring your FC up to reccomended Shock Level, while maintaining a 7.0 PH.
6. Keep it there till it holds overnight, **I would even keep it one more day if possible.

***This is where my Metals fell out again and I was really bummed, but I stayed with the plan.

7. (After you FC holds) - Go to step 13 if you didn't stain.
8. Let your FC drop to the 1.0., keep PH at 7.0

***At this point I noticed that many of my stains began to dissappear automatically, must have been the Sequesterant in the water.

9. Vaccum if you have bottom staining.
10. Clean your filter or backwash.
11. Add another maintenance dose of the Sequesterant
12. Let is circulate till the staining is gone. (hopefully it is by this point)
13. Bring your FC gradually up to sanitizer level.
14. Keep you PH at 7.2-7.3 tops

Hope this helps.