I water the Phals when the roots look Silver, and I check the bamboo skewers I have in all the pots before I water them. Two of the Phals are in Moss, so I guess they need to be repotted into bark, the other 2 are in bark and it looks ok, but I will pull them out if I can without them breaking and put into new bark.
There is also a brown papery looking thing on 1 of the Phals. Is this something I need to worry about and remove? I think you should be able to see it on 1 of the photos I posted earlier in this thread.