| I have had to deal with this plenty in purchasing phals that have been mishandled - lots of rotting and portions of rotting roots. If it were mine I would remove ALL sections of root that are black/rotten/mushy - even if there appears to be healthy root further out on the length of the unit. The plant is not going to bring in nutrients through the rotten or theadlike portions anyway - it will be just a matter of time until the entire portion is gone. Even if the plant has nearly no roots - same response. Cut off the "threads" (remnants of once healthy roots) as well. When you repot be VERY careful to not over water - maybe err on the dry side before watering for awhile - and possibly think of using a root stimulant like Superthrive. It is amazing how they will throw out new roots and before you know it - all will be well. Enjoy! Mike |