I forgot about reading about unscented clay kitty litter. I'll use that mixed in the potting mix. I also got a plus in that I'm pretty sure are water is high in iron also.
Mach six thanks about the suggestion about saf t sorb. I do have a Grainger near by. I considered it but veto it because it strips one of the hardness from water(I think carbonated if I read correct).
Eco Complete and Fluorite I've read both have high cec properties. Fluorite is some type of baked clay, I now remember that it's inert (guess baking ties up the minerals like iron). I read somewhere that Eco Complete is crushed up lava rock. Doesn't matter anyways the point is they both have high cec value.
Eco Complete from what I understand use to be dry, which pretty much made it the same as fluorite. The wet(newer) stuff has all the minerals and nutrients in it. Sort of like soil but it will be used up a whole lot quicker.
I will use a bag of Eco Complete for 2 reasons. 1st as a booster until the soil starts to decompose. And 2nd from a total lack of pet shops in the Charleston, WV area the Nitro store is the best. He swears by it, so to support him, I'll pick a bag up.
So I'll mix litter in with the potting mix and cap with a mixture of fluorite, eco complete and gravel.