Hello everyone,

some of my plants are starting to worry me and I would appreciate some opinions on what I should do.
I was gone over the summer and left my plants with my mom, and when I came back they were full of thrips. By now I have gotten rid of them, but suddenly my calathea is starting to show tons of brown and yellow spots. I cannot find any thrips on them anymore, so this can't be the problem. On the second picture, you can see that even the new leaf in the middle is starting to turn brown even though there is no thrip or other kind of bug on it (un un-rolled it to check).
The small plant on the last picture is not doing well at all either, after the thrips infestation it was already weak but it has gotten even worse in the last weeks after the thrips were gone (I already cut off a ton of leaves that looked even worse). Plus the soil has become all moldy even though I don't water it too much, and this has never happened in the year that I've had it.
Does anyone have any idea what the problem could be? I recently moved and the water here contains quite a lot of lime, could this be the problem? I have had the plants for a while and know how much water and sun they need, so I'm really clueless as to what I'm suddenly doing wrong. I already sacrificed so many leaves on each of the plants, so I would really like to get this problem under control.
Thanks a lot to anyone who might answer!

Julia

It looks like a moisture issue to me, especially on the second plant with the moldy soil. Container plants need excellent aeration at root level and the soil should be allowed to dry somewhat between watering. The ideal is to try to keep the soil just barely damp throughout, not overly wet and soggy but not allowed to dry out completely.

Goeppertia (formerly classified as Calathea) also like a lot of humidity which can be attained by sitting the pot atop a tray of moist pebbles and always keeping a very small amount of water in the pebble tray.