If it helps you, earlier this summer I positioned one Phalaenospis giagantea flowering size (that I had grown from a young plant), one Aerangis ellisiim and one Aeranthes grandiflora outside for the summer, and by an error in my calculations they ended up in the full midday sun, and for several hours, at temperatures well above 30C, instead than in bright shade. Before I realised the mistake, several days had passed. You can imagine the status of the plants.
PS: What substrate are you using for re-potting?
