The Iron Out doesn't actually pull the metals out--it just re-suspends them in soluble form in the water. If you want to drop them out of suspension, just shock the pool--high chlorine levels will make them drop out--but may also make them stain your pool.

HEDP is a type of sequestrant--don't remember the chemical name, but I believe it's the same as Jack's Magic Pink Stuff. There are a few folks around the forum using that in conjunction with a Culator, as described in the thread I advised you to read, to pull the metals out of the water without actually dropping them out and staining anything.


Janet