Your plants dont look like they need more light to me they look dehydrated. There are a couple of things you should do, first you should repot it into a clear pot with new potting matter (if you do not have potting matter a good place to get some is repotme.com)
When you go to repot it you will want to have a sterilized single-edged razer so you can cut the bad roots off. Then just repot it in a new pot.
I did not see any thing wrong with your paph but you could repot that one to and look at the roots if they look dehydrated then do the same thing you do with the phal.
Good luck