CHC has a variable amount of salt, depending on where you get it. As I understand, coconut husks in some areas are transported by simply collecting them in a net and towing them to the next island, behind the boat, in salt water. Some coconut husk is not.
There is an excellent thread on coconut here:
Coconut problems - The Slipper Orchid Forum - The First Online Slipper Orchid Discussion Forum