Confused about Cymbidiums

[chiirioz]

I'm a bit confused about Cymbidiums - just starting to get into these lovely plants due in part to the lack of space in my apartment... I finally did some spring cleaning and I've made some space.

I keep reading differing articles about Cymbidiums and how this orchid is a terrestrial or semi-terrestrial orchid. Most people recommend Coir or Coco Husk. I am not a fan of using either as potting material for any of my orchids so I don't want to purchase a bag just for this one plant.

I've potted my Cym in 85% small Orchiata bark and 10% mix of mostly sponge rock, some charcoal, hydroton to give it some "air" pockets + a few threads of chopped sphag for added humidity. I'm guessing I will probably have to water it more than people who keep it in Coir and even peat moss... Not really worried about killing it - I hear they are very hardy.

Any thoughts?

(Side note: the Cymbidium came in the mail with this spot on its leaf - I think it's just sunburn or bruising from shipping. Keeping it quarantined for now: LINK. Someone mentioned it could be a fungal infection)