I'd like to add a little bit as well from my personal experience.
First off, drying roots are quite common. Phals in the nursery are kept in nearly ideal condition and when they come to our home where humidity is usually much lower, their roots suffer unless you live in semi tropic area or mist them throughout the day.
They do adapt really well though. Your plant looks great and I wouldn't trim off any roots. In the second picture, you see how the new light green root is growing? Phals usually grow these new ones to make up for damage. They also grow new roots off old roots. The browning root on the second picture is still alive. You see how the browning part looks dead (the velamen is dead or damaged, but the side core is alive) but past that, there is a slightly wrinkly but living roots continue?
Leave it and just wait for new roots to grow. They will adapt to home condition and grow accordingly.
Your phal looks like it is planted in a semi clear plastic pot. You don't really have to pull it out of the pot to check roots as you can see through the pot and check the roots and the how moist the media is.
Make sure it doesn't dry out completely. They will not die but drying out is not good for phals at all. Also avoid to keep them too wet which leads to root rot and death.
The dead roots at the bottom of the pot is probably because it was crushed and damaged while it is being sit on the saucer or something, and then when it gets wet with watering, the rotting starts. simply just cut it off and let it dry before sitting it back on the saucer.
In the nursery, phals are not sitting on saucers but on wooden or metal wire benches, where roots have more than enough space to grow out of their pots and grow all over!
wish you all the best!
Wynn Dee 13- I would like to find that thread and read.
Thanks for mentioning it.
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