Need insight to why leaves curling down

[Conroydupree45]

Please help I'm sure why growth is curling down like this! Think it might be over water but I'm not sure. Any help appreciated

 

[Kamisama]

overwatering and high humidity, root rot, temperature

 

[Conroydupree45]

overwatering and high humidity, root rot, temperature

Humidity about 50, temp starts at about 70 and gets to about 79 by the end of the day. On same schedule as 4 others and this one is only doing it.

 

[Choppr]

heavy rigged leaves "Puffy Leaf" fat w water - "Clawing Leaf" locked out - and @Kamisama might be right she might already have root rot from anerobic soggy soil...re-pot her into dry soil, check roots as you do this, if theyre mushy brown or smell bad she's not worth reviving -If roots aren't rotten then dry soil might wick the soggy out, she needs to dry back, good luck

 

[GNick55]

Humidity about 50, temp starts at about 70 and gets to about 79 by the end of the day. On same schedule as 4 others and this one is only doing it.

i can see a bit of the plants behind it and yes it has similar upside canoeing curled leaves..
show pictures of those plants and what you feeding? and growing medium?