Kem Tek 338 vs Jack's Magic Purple Stuff in salt pool?

[JimK]

I thought that the pink and blue stuff were the same strength. I seem to remember seeing that somewhere, either on the bottles themselves of in some of the Jack's Magic Literature. I could be wrong.

I took a look at the bottle and there's nothing listing ingredients or concentrations. It's interesting that the dosing instructions for the Pink Stuff and Purple Stuff are exactly the same to reach the same level (10-12ppm).

I did see this on the Purple Stuff bottle in addition to its claims to "remove" metals; "...helps keep silica in solution and helps prevent scaling of cells in salt water chlorine generator systems..." What exactly does this mean? Anything?

Found this on poolgeek.com (where I buy Jack's Magic) about the Purple Stuff; "A concentrated blend of stain preventing and sequesting agents."

And this about the Pink Stuff; "A professional strength blend of sequestering agents."

This seems to point to some difference in strength.

Then there's the Magenta Stuff for salt pools. Instead of HEDP is uses "Acrylic Acid Copolymer". Any idea what this is and it's effectiveness?