zygopetalum questions

[Rainshadow]

I was recently given a Zygo, its a noid from HD but a cutie, compact w/ brown, green-tipped sepals /petals and a solid purple lip. I haven't grown one before and I don't think I really have the conditions for it... but that SCENT!!.. . so want to try.

I couldn't find recommended fine bark mix so potted it in MiracleGro orchid mix, would I have been better off with just medium bark? I'm more comfortable with that, I'm wondering if there is a little too much fertilizer in the mix.

Its looking a little stressed, it has a couple of curled leaves, I know they like water but am a little paranoid about those big, fat roots in that mix.

I may be giving it a little too much light, read to bleach the leaves from deep green but don't know how far to go. How do requirements compare to Phals and Oncidiums?

My humidity is appalling and I probably need to address that as well with those thin leaves. Not sure about temps either, its hot here now and it looks like it might be a little stressed from the heat too.

Any suggestions appreciated, THanks, Rainshadow