Metal Treatment Here I go!

[cav]

Vinyl IG 30KGL pool. DE filter

I have read Gerri & Bonni's posts & I think I'm ready to tackle my stains yet I have a few questions before I start.

First the facts. My water has been crystal clear all year yet 75% of the floor is stained from last year when I added more than 15KGL of hose water from the town. Last night I put some vitam C in my leaf bag & dargged it over the stains & they came off just about instantly & have ramained clear for more than 24hrs(See pic). Below are my most recent readings.

So from what I have read this is what I need to do?

1) Bring down the CL level to 3-5 Since my CYA is 60? Or bring it to 1?
2) Get some AA & add it to the pool. How much should I add? Where can I buy it? I guess I will dilute it first as well. Water first then add the AA
3) Add a squestering agent. Which one & how much? Also would I do this right after the AA or the next morning etc.?
4) Add some 60 Algecide & bring up the CL slowly & stop if I see the stains come back.

So here are the questions

1) Should I even try this now with the weather being hot? Or wait until the end of the season when it's colder for longer stretches?
2) Could I hope to do this on a Thur.-Sat morn. then still use the pool for swimming this weekend? Or am I not using POP out of the gate?
3) Since the Vitamin C works so fast & no stain came back can I assume the stains are not that bad & may come out & stay out w/o droping the CL levels so much?
4) Could I just use Vitamin C rigged up in a stocking & pole & rid the pool of the stains w/o doing anything else? It would take longer yet I could take my time & lose no pool time?



FC-7.5
CC-0
TC-Orange
PH-7.2
ALK-80
Cal-200
CYA-60
Temp-78

Thanks for any help & sorry for all the stupid questions