I just moved several phals from s/h back to AAA+ NZSphag.
I just don't think my conditions were optimal.
I had the seedling mats, humidity trays etc...but the plants are smaller species and seedlings. The new roots would get dry fairly quickly.
The bigger phals in s/h with pots 4 inches or greater are doing very well for now and I am continuing my "experiment".
For the NZS I only water when the top is getting dry and for the first time in a long while, "I gots phals"