Has my phal got mold issues?

[Susie11]

Hi I recently bought a phal from the roadside and it looked really healthy. The next day I saw that there was some white stuff growing on it on the stakes. I have now seen that this mold like substance has spread to the roots too. It has already affected one of my other phals so I would just like to know how to deal with this issue? Sorry if this is a double post.