I bought a very young N. Diatas probably about 7-9 months ago. In the last 4 months or so it's been slowly but steadily declining. I've placed it in a couple of different windows to see if different lighting would make a difference, to no avail.
A few weeks ago I noticed that though the newest leaf had turned black, there were tiny buds at the base of the next two leaves (where they meet the stem). I assumed these were new growth points and hoped this was a sign of recovery, but now these two points look as if they are turning black, too.
The plant is currently (and has been for about two months) in an east facing window, where I grow my N. Sanguina (which is doing quite well). I moved it from a west facing window a few months back because of a steady decline in health. I have a few other neps and care for them all the same way, and this is the one that seems to be really suffereing.
Any help or hints to salvage this poor guy would be helpful; I didn't spend much on him, but it's the principle of the thing!