Wow, I am definitely going to have to try S/H with my Vandas then!
I'd read previously that S/H only worked with roots that grew into the media by themselves and that established roots would likely die in the media. Glad to know that with care it might not always be true!
I only have 2 Vandas in those plastic baskets with just a bit of sphag but soaking each of them in a bucket for 15 mins every morning is something of a pain.
They also tend to grow roots that point in totally annoying directions so that they won't fit into vases
Well, off to get the heat mat out of storage!