Hey guys, I meet a troublesome issue, every single of my Nepenthes Ampullaria leaves grows well except for a young leaf, in the beginning, it grew as normal the pitcher bud is red and started to grow bigger, but after I fertilized in a Suitable dosage, the rest of leaves were pretty well include the top bud until I found this single pitcher bud stopped growing and getting darker, I'm not sure it will cause this problem, maybe the temperature was low or too much sunlight, could you analyze it for me? what can I avoid this happen again, Thank you!