Thank you one and all!!! I am so glad I found this site. My Easy Set pool was fine for 1 year and then I had a problem with the salt based chlorine generator. The pool wasn't brown.....yet, but It kept telling me the salt level was low so I kept adding salt. When I finally changed the electrlytic cell, the water had too much salt. I had been adding liquid chlorine when it wasn't working so the water was still good. However, I now decide to drain about 1 foot of water out to get the salt level right so the chlorine generator would start working properly. What happened next shocked me. I added back the 1 foot of water from my well (the same well used to fill it 1 year earlier) and in a day the water turned brown as tea. I thought it was algea so I kept running the chlorine generator sincee it was now working but it steadily got darker. Then I decided to search google and I found this posting. My well purifications system must not have been removong iron the day I added water and that 1 foot made the pool a mess for the last 2 weeks. Based on all these stories, I am going to do a "radiator" flush on the pool. I pull water from a pond for my sprinklers so I am gonna use that water to flush the bad water out. I would drain it completely except I buried it 2 feet in the ground and the walls will colapse if I do that. I will follow up once I am done this weekend.
