My first pool coming in two days, size is 21' by 52". I'm reading as much as possible but am freightened this is going to turn into a never ending battle.

I have Iron bacteria in my water (well) and anything I fill with water eventually turns brown. I am going to shock my well before filling the pool but not sure if it will help much.

Tested the water at a pool shop:

Tot Chlorine: .3
Free Chrlorine: .3
Hardness: 265
Total Alkalinity: 206
Iron : 2


Any suggestions on what to do during the first fill to help avoid the iron issues?
Any other Newbie Best Practices with my first fill would be greatly appreciated.

Thanks,