My pool water has been crystal clear. Went away for a few days, came home and the water was a little low due to evaporation. I have well water and the back yard spigot is filtered through sediment filter and softener. The front yard is not filtered at all. I put the hose in the water and used the front yard spigot. I went out for a couple hours and come home and SURPRISE! The water in the deep end is brown and some iron particles on the bottom of the pool. Lovely! So now I gotta get this cleaned up. I turned the pool on and figured I'd let it run through night and see what the DE filter can clean out? Then I'll vacuum tomorrow. Any advice?