led lighting and coconut husk.

[silken]

You may already know this, but I heard it at our orchid society meeting and was surprised. Before using coconut husks you should rinse them thoroughly 2 or 3 times. Apparently, in the tropical countries where they are harvested, often the locals rinse them in salt water from the ocean as it is plentiful and they are often sold in this state. The salt will burn the roots of your orchids. So a good rinse should prevent that.

I've almost given up on them as I seem to have caused root rot using them although they were usually mixed with a bit of sphagnum moss and pearlite. I'm now trying a mix using bark instead and trying not to keep my plants so wet!