Vanda Losing Leaves-Pictures

[blake]

So i bought this Vanda from a very respectable grower and i have had it about a week. it sits under a palm tree outside all day hanging. gets partial shade all day and gets watered every other day. The lower leaves have started to turn a different color and are limp/starting to peel off. Now if you can tell, new roots are growing rapidly all inbetween these leaves and many of them are splitting the leaves that are falling off. Also our neighbors sprinklers go off everyday and it could be getting the plant wet with sprinkler water. What are your thoughts on why it is doing this?