i have learned something new again!
my apologees for being totally wrong.
Oh, there's nothing to apologize for. If I wasn't already growing the vanilla in AV mix, I would've thought along the same lines as you...an orchid in soil? No! LOL
For some reason, this is an exception to the general rule
That's why this place is so great...we are always learning from each other! That's what it's all about