Hi MattB
welcome to the forum
I hope you enjoy your stay with us
here is a link to the AOS where you can download a culture sheet.
http://www.aos.org/aos/orchids/page01.aspx
It sounds like your Phal has finished flowering.
with the use of moss it needs to be kept moist and not wet.
having roots above the moss is normal for Phal,s
It would also help us to help you if you could also go into your user settings and update your Profile with your Location.
As we have members from all over the world with different growing conditions.