tropic marin part c

This is actually a product chemistry question. Maybe @Lou Ekus or someone from Tropic Marin will see this question if none of us know the answer. I use all three of the products listed in the title to help keep my minor and trace elements in balance. I've read multiple times its not a good...

@Randy Holmes-Farley, what's the reason for not mixing Tropic Marin Part C with the Calcium solution? Stability? This came to my mind as a webpage from Triton implies adding NaCl-free sea salt to the Calcium solution is actually doable, but will make the solution less stable in the long term...