Lately it seems like many of my nepenthes are in a funk. Some continue to grow leaves but have stopped pitchering while others have slowed down all around. Quite a few have spouted basals in the past few months so that might explain some of it. I moved to Texas at the beginning of September so I can understand some stress/slowdown due to the move but I would say much of the slowdown began before the move.
Overall setup: I have my plants zipped up in a mylar grow tent so no natural lighting. Lights hung on the top with a single level of shelves and 4 trays of plants. Below the shelves is a hose that pumps in air from the window A/C unit (recently switched to 'fan only' mode to take advantage of the cooler nights) and an ultrasonic humidifer in a large bucket to humidify the air from the hose.
Lighting: I have 3 4' shop light fixtures (6 bulbs) with T8 florescent bulbs about 8-12" above the plants. These provide about 6500-7000 lux at the plant level. Lights are on for 14 hours a day
Watering: I water with a sprayer 2-3 times a week. Water is usually collected from the window AC unit and measures about 20 TDS. Typically a 1/4th to 1/2 inch of water sits in the bottom of the trays after watering and dries completely between waterings.
Temperature: Temp usually peaks around 76 during the day but has gotten as high as 86. Night low is usually between 52-58, staying below 60 for about 5 hours a night.
Humidity: 50-60% during the day and 80-90% at night.
Soil: Some plants are in LFSM/perlite and others are in coconut husk/charcoal/perlite/small amount of LFSM. Any new plants or plants I repot are going into this 2nd, much chunkier mix.
Tang x Veitchii - growing and pitchering like a weed, even with basal sprouting up
Thorelli x aristo - growing/vining but stopped pitchering. Basal just sprouted so this could be a factor
Camp x maxima - growing like a weed but has stopped pitchering
Inermis x bongso - growing/vining but has never pitchered for me
Spectabilis - growing and pitchering well, basal from a few months ago outgrew the main plant and took over.
Izumae x TM - looks sickly, growth all but stopped
Sib x TM - main growth point looks to be dead, a few basals have popped up and are looking strong
Sib x (spec x aristo) - growing/pitchering well
Veitchii K - growing/pitchering well
Mikeii - growing leaves but not pitchering
Vogelii - growing leaves but not pitchering
Vent x spectabilis - growing leaves but not pitchering
Jamban - growth tip died as basal was coming up, stopped growing and died