Wow, thanks for the quick responses. All plants are in a 1:1 lfs and perlite mix, and are watered with distilled water. All three are in a sw facing window where they receive an hour or two of direct sun and a lot of indirect sun. I also mist them twice a day. Daytime Temps are around 75-80, and drop to 75-70 at night. The below photo is the n fusca.
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In other words, you've acquired these plants in the past 6 weeks and placed them directly on the windowsill where they are exposed to direct sun for part of the day, in typical household dry air conditions, yes? If they arrived bare-root (I assume they did, since you mentioned your potting mix) and you did
not give them an acclimation period by bagging them for at least 4 weeks before moving them to the windowsill, then you are desiccating the plants while they are struggling to make new roots. That is one very stressed looking plant, my friend.
Solution:
no direct sun exposure for the next 8 weeks at least, and provide
consistent humidity. Misting the plant with water provides a humidity boost for about 15 - 20 minutes at most, which has almost no effect on the plants. They may eventually adjust to the low humidity of your home, but they don't stand much of a chance if they don't get roots established.
PS: 70-75F at night is
far too warm for
Nepenthes fusca.
N. boschiana might tolerate it, as might the
campanulata hybrid, but you should be providing a temperature differential greater than ten degrees between night and day for long term health.