Should I add a metal sequestrant before shocking my pool with well water?

Yes. Well water often has iron, manganese, or calcium that will turn your pool green, brown, or cloudy when you add chlorine. Fill the pool, test for metals first, and if iron is present, add a sequestrant like Metal Magic or Stain Free, then run the filter for 24 hours. Without that step, chlorine oxidizes the metals and you’ll fight stains for weeks.