I would prepare yourself to lose a few of the older leaves no matter what. Partly that’s just what phalenopsis do, but this one is also healing and adapting to a new situation.

And chill out really hard on the fertilizer. It’s very easy to over do it. I use a weak nutrient solution called “Orchid plant food mist” by miracle grow maybe one good pump on the exposed roots and foliage once a month has been plenty to get annual flower stalks.

It looks quite healthy but the transition from hydro to not-hydro (geoponics, i guess?) will trigger a lot of physiological changes and internal reshuffling of nutrients. It’s inevitable.