



What am I doing wrong?
Hey everybody, I am an accidental first owner of a Calathea and he's struggling a little. I have a couple of leaves that are yellowing that 100% are going to dry out because I have already seen this happen 3-4 times in the last few weeks :(
When I got it almost two months ago I didn't know it had very specific needs. I am now running a humidifier right next to it and I've been giving him exclusively distilled water for a week. I also sprayed neem oil as I've noticed there were a few spider mites (can't see them right now).
I think the biggest mistake was a month ago when I repotted it, I used universal potting soil but now I know it needs something more airy, but I'm scared of changing the soil again because the first time I did that it stressed him, gah.
There are no abrupt temperature changes and only receives indirect light. The good thing is that the leaves in the middle are okay, they change position normally from day to night and I have a couple of new growths.
One last detail, where I got this plant from it was already stressed and it has crispy borders and it was discolored.
Please, what can I do? Thank you