Great input from Natural Chemistry, but still want feeback....

[CarlD]

I don't know a lot about lantheum, but I believe it is a "rare earth"--an element.

[waterbear]

The phospahte eliminators on the market that I have seen are usually lanthenum chloride or lanthenum carbonate. One makes a mess and the other isn't too bad but I don't know which is which. And NaturalChemistry does not reveal their MSDS unless you can demonstrate to them you have a need for it. That makes me suspicious of them even though I have used their products

[salinda]

Thanks! If it helps, maybe her description of one of them flocking the phosphates to the pool floor (flocculant) and the other making cloudy water (suspended precipitate?) that is eventually cleared by the filter can give us a clue. I am pretty suspicious too. I only add acid to my pool regularly now that I have an swg.