I lost half my Twinkle to CHC and repotted in BOS mix. It went nuts. Not sure the stuff I buy at Broward Orchid Supply is using a standard name on their mix, but it consists of fired clay pellets, Sponge Rock, Coconut Chips & Charcoal. I also have it in a terracotta orchid pot.
It looks pink, but that was from over fertilizing and after a flushing, they turned white like they are s`posed to be, Notice the space between the plant and pot as these are fast growers and need room