^ Thank you for your advice (once again), Gage.
I will definitely cut back on the fertilizer then. The plant was in a smaller pot previously, but it looked like it was needing some room. Two rather thick roots that shot out hit the ceramic pot wall and then stopped growing, one of them eventually shriveling up and died off. I figured it needed more room. I did line the bottom of the bigger pot with a chunk of styrofoam, so it actually has less potting moss than it appears.
That does remind me, I need to get more chopped bark. On another plant, I have the pot mostly filled with bark and then a layer of moss on top to help trap in the moisture. It seems to be working well. This was with a keiki rescue. It was dangling off of a mother plant and not looking all that great (two leaves were drying up). The plant belonged to a relative who welcomed me to detach the keiki and trying growing it. The remaining leaves that had a light olive faded coloration ended up staying on and getting more life back into them. More leaves sprouted and then a fanfare of roots shot forth. I'm just mentioning this as the potting mix I described seems to be working well for the plant. The roots inside the pot are a bright healthy green.
^ Here you can see one of the previously suffering leaves is still alive, with a dead section near the tip. The smallish cluster of leaves in the center is all new growth. Strangely, the first few that started haven't grown much (this is going on several months).
While the top has a good cluster of thin spiny roots, underneath there are much thicker and lush green roots running around amidst the bark pieces.
It's hard to make it out, but there is an 80% bark to 20% sphagnum moss layer on top. The clear pot seems to be helping with the growth of algae/moss that increases humidity inside the enclosure.