Wonderful, thanks everyone. I think I'll cover my bases, throw a little potting mix into the Cym pots and give them a dose of Osmocote to carry them through summer.
I might supplement them with a shot of soluble orchid fert, if it looks like the new growth is hungry.
Earthworms/pot = Huh?? This whole orchid growing thing is pretty complicated and convoluted. So many different ways to go with care, watering and fert.