Just goes to show how well adapted phals are to living "on air": since your plant was doing very well purely by means of the arial roots! Of course it also shows you are a good grower- you obviously provide a good level of humidity etc.
Don't you feel that if there is ever a nuclear armageddon... the surviving cocroaches will have to share their sad new world with PHALS O yes- Phals will see us all out!