Kevin on reading your post, I have had more luck with Phals outside under a shady tree, when all else seemed to fail. Over here in Oz. our temps. through Summer were around 77 - 84 deg. The place I had them in received a lot of breeze, a little bit of sheltered sun, raised on a metal stand over the garden bed. Their leaves after 3 months and roots doubled in size. I ensured that the pots had a slight tilt, so any rain or moisture ran away from the crown and that the water I gave ran completely through the pots. I resurrected 4 of my Phals, that nearly made it to Orchid Heaven this way. 3 of these Phals that I purchased from Bunnings, had to be repotted out of Spag. moss, which I think nearly killed them. One now is sending up a flower spike.