My only question about the iron being in my water - We have had this pool for 4 seasons - this is the 1st time something like this has happened! I have been attributing all the issues to the fact that we left it up this past winter (had a mild one) and of course, lots of yuck got into the pool - but when I opened it Memorial Day weekend - we drained it - I scrubbed everything down with Chlorine and when I filled it back up I did have a milky brown color for some time - so I drained on June 14th - down to around that one inch mark - because I don't know how to get rid of that last 1 inch of water in these Intex pools without taking down the pools and flipping it over, which is what we do when we take it down (sidenote: hoping ot find some help on this forum on how you get ALL the water out of these pools) - Anyways...after refilling it - I just maintained my levels, vacummed it every couple days - didn't add anything other than liquid chlorine and all was fine until this past weekend! I was actually doing a happy dance the weekend o June 29th - because I felt like I had finally conquered the POOL ISSUES - ugh - how sadly I was mistaken. I probably will throw the paper towels in tonight and see what that result is - I can tell you my filter cartridge is black (would that mean iron or copper) - I have been rinsing that every night as well, but I do have concerns that my liner is stained and my tubes are stained and even the inside of my filter is not lookin' too pretty right now - I'm almost ready to drain and put a sign on - take it - and I'll go buy another - ugh!!!