Just looking for some advice on my small banana plants as I can't find anything similar online. Yesterday I noticed that they developed these nasty looking brown-grey spots and patches focused on the leaf edges. There's two large plants potted together (with some small baby ones underneath). One plant is affected worse than the other but both are affected. You can also see the leaves are folding in.
I got them just over a month ago and repotted them together a few days after getting them, but keeping the original soil intact and just adding new soil on top and around. They've been doing great up until now, pushing out new leaves like no other, and I don't think I've been over/under watering. There's amazing light in my apartment and I have been trying to gradually acclimatise them to sunlight over the last few weeks.
I'm not sure if this is some disease/pest, or maybe a delayed response to repotting (despite keeping the original soil)? I'd rather not let it die as I was growing quite fond of it, but it really doesn't look like it's doing well