I wouldn't worry too much . . .
“Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo . . ."
-- Galileo "Biff" Galilei
It was in shade. that's why I'm worried. would the pitchers be "crispy" if it was burnt- theyre soft and brown
I am just hoping that that one green pitcher stays that way and doesnt turn brown like the rest did almost overnight
Alec, it seems like root rot. If I were you I would remove all the dead pitchers to prevent further fungus infection and try to save the rhizome. Hopefully it is not too affected that you can try and get new plants from it.
I think the soil is too wet. I would let the soil dry out, move it to shade, and keep it in somewhat cooler temperatures.
"I may be on the side of angels, but do not mistake me for one."
If you see any winter leaves in there, pull them and attempt to propogate them.
You mentioned that you just got the plant. It may have died back due to shock from shipping if it was shipped. If so, it may spring back to life in 3 - 4 weeks. That's happened to me a few times.
Or it may have gotten too hot. Some Cephs seem to take heat better than others.
Since your plant is still new I would give it time to acclimatise to it's new environment and maybe keep the media on the drier side beacuse you are keeping it in a tank. Without proper air movement and a wetter media you'll be inviting root rot.
I got my baby cephs in July and kept them outside in the greenhouse. They've thrived even though the greenhouse regularly hit temps of 95f during the day but the key here was that our nights this summer have been unusually cooler going down into the high sixties/low seventies so the plants experienced a nice drop in temps at night which they really appreciated.
Thanks for all of the advice! If it comes back I post a pic.