It needed repotting at least 6 months ago. The media you are using is rather dry and not holding enough moisture. How often are you watering it? You should be watering it every three or four days. And when you water it, water should really pour out the drainage holes.
The pot you use needs is own drainage holes. You should not attempt to grow them inside a pot inside of another pot.
It looks like it is in either a 10" or an 12" pot. A plant that size with only a few live roots, should be in either a 4" or 5" pot. Again, water it good every three or four days.
They can not live in direct sun but they won't grow in a dark area either. North or East window should work.
Fertilize weakly 3-4 times a year.
Try to use pieces of bark, 1/4"-3/8" inch in size. That size will hold more water. They respond well to repotting and usually produce new roots in 4-6 weeks.
Please join us in our Orchid Forums! There are numerous threads and stickies there on growing Phalaenopsis. One in particular "Supermarket Orchids- Phalaenopsis. If you scroll through that sticky and read the comments, you will learn so much!
It is "orchid media", not orchid soil. Soil will kill any Epiphytic orchid quickly!!!
