OK, this may sound crazy but do all Phals have pale to white roots at the centre of the plant and pale green on the outer part? I have just repotted a Phal Taisuco Noble P equestris 'alba' that I acquired last week. It had been in sphag and I changed to fir bark/charcoal mix that has been soaking for 48 hrs. The plant and most of the roots look good and are firm. Sure hope I did this right. Any suggestions?