FYI: My Calathea is still alive (but pale)

Update: I bought a Calathea last fall and asked here how to keep it alive. It is still alive (yay)

We’ve already gotten through a few problems. Brought home thrips from the store. Repotted.

I was really nervous about repotting it, since it had just recovered from the thrips. But it was a good decision. The plant had a mushy death knob in the middle that was hard to remove. It seems to be doing just fine so far.

It’s just gotten a little pale; I think it’s too dark where it’s sitting. I’ve already bought a lamp. Does anyone know what else could be causing this? Do I need a different fertilizer?

(If you see small suspicious spots on the leaves: I’m using predatory mites as a preventative measure and poured the rest of the bag over the leaves yesterday. I currently have no pests on the plant)

Thank you 🌱