Is this some sort of fungus/bacteria? I can't find any pests. It's stopped growing, and the newest leaves are all warped and small and spotty.
I water it every two weeks or so when it's about 75% dry with GT Foliage Focus 5mL/litre. It gets bright indirect light from a west-facing window (it's summer here in NZ). And it's in the same chunky soil mix as all my other plants.
What should I do?
by DaisyNiko