Repotting a phalaenopsis

[cra323]

Hi all,

I'm a super inexperienced orchid lover, and I have several questions about repotting. A couple years ago I did some research on the issue and attempted to repot one of my phals, and it did NOT go over too well... There is A LOT of contradictory info on the internet (naturally).

I've read conflicting information about when to repot, how to repot, how to trim roots (healthy and rotten alike), which medium is best, etc... It's all rather frustrating.

So--- I have one phal. that has dramatically outgrown it's pot, and the moss is super old. However, it is in the midst of blooming and I'm not sure if I should wait to repot or not. Also, I have noticed several roots that aren't looking too good, but I'm not sure exactly what to do, as some of the roots look rotten at the top but are still green and growing towards the tips (???).

Does anyone have any advice/input?

I'm going to attach some photos. If anyone sees anything that I haven't mentioned, please feel free to let me know