I believe Cecil is right. We use well water in our pool, and now have a prefilter that attaches to our hose. Once the water is in the pool the chlorine and ph have to be lowered to allow "binding" of the iron. If you try to add sequestrants the chemistry is not right to allow binding of the iron and the resulting compound will not flocculate and settle out of solution.
Wow, me use big words
hey bevis, I said flocculate, he, he.
