I have this poi dog Nepenthes that recently has had some troubling signs on it's leaves. It's growing in my tent at 86-88 F and 70-75% humidity by day, 65 F 90-95% humidity at night. This is the only plant doing this. Most everything is really thriving. It should be noted this plant has always had a "dirty" look to the bottom of it's leaves, but this is the first time it's been on the top and new growth like this. I'm not even certain that the two are related, this could be something totally new. Any insight would be appreciated. I've had this plant for 3 months, it didn't have pitchers when I got it, and it still doesn't.