Miltonia/miltoniopsis

[Iray]

Hello I bought this plant a few days ago,the tag said 'miltonia' but the picture on it was that of the miltoniopsis...
I've never grown one and know little.
What do you think about its condition?
I repotted it and the mix was bark and white stones (didn't look like perilite) and had a ball of wet moss in the middle! It also had some snails :s
So I repotted it in small bark ands expanded clay. I hope I did a good job!
What are the things not to do? For example in phals not to water between leaves etc?
Thank you all in advance!