Hi, everyone!
I've had an indoor banana plant for a couple of months, which seemed to do very well at first, but has recently stopped growing in height, which has caused the new leafs to not being able to come up enough and spread out normally. One baby plant that grew beside the mother plant has also died.
Picture on how it looks now:

As you see, all leafs are on the same height since the plant doesn't grow.
It stands right next to a window, so lack of light is probably not the problem. The temperature is about 75.2 F, and I guess that the humidity is at least 50% since it also stands right next to an open aquarium.
Do anyone have any clue to what the problem might be?
