WillC said:Please post a photo so we can see what you have and what you are seeing. How are you treating the spider mites?
Well, I tried EVERYTHING to get rid of the spider mites including an oil based insectcide. I already had to treat my smaller Calathea White Star, which was my first Calathea. The last method I tried was the "plant in a moist clear pastic bag"-method which was effective but my plant didn't like it and eventually I had to trim all leaves expect 2. It since regrew and is perfectly fine.
However, since the leaves on this plant are already damaged I don't really want to keep them anyway and would cut all of them off immediately if I knew the new shoots wouldn't be affected. (Posted a picture of the shoots above)
(Also; here's a pic of my very sad plant:)