A Vancouver, WA grower had N. khasiana and N. truncata 'Pasian' with drooping lids in a terrarium (54W fluorescent, 68–74°F, fan, 1" lid gap, morning/evening misting).
Misting creates humidity spikes/crashes—pitchers abort. Fans and lid opening/closing add inconsistency. Open the lid a bit and leave it; run fan constantly or not at all. Misting is unnecessary in a terrarium and often harmful (detailed article).
N. khasiana and N. truncata adapt well as houseplants in sunny windows. They grow slower but avoid terrarium complications.
Good Growing!
Jeff Dallas
Sarracenia Northwest
https://www.cobraplant.com
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