Phalaenopsis with white spots on roots

[mel82]

Hi everyone,

This may seem like a VERY obvious question, but my Phalaenopsis has white spots on the roots and they are turning brown and shrivelled, so my guessing is root rot???!!!

The leaves look ok, maybe a little droopy but I have also got a spike with 4 large buds on that look very healthy.

I've read about physan20, can you get this in the UK? and how exactly should I use it, could I just mix it in with watering? Should I repot? Will I lose my buds? Argh!

As you can see, I am very clueless so help would be appreciated... by the way, i would say I err on the side of underwatering not overwatering.

Any comments would be appreciated,

Thanks, Mel