General cupped-over appearance of the older fan leaves indicates rootbound. Not just tips, but also edges. If it looks like an upside-down canoe, repot. If it looks like a rightside-up canoe, raise your lights.
:jointsmile:

Edit: Nah, it's neither too late nor too dangerous. Let the root ball dry out rather well first so it doesn't break apart during the repot under its own weight.
stinkyattic Reviewed by stinkyattic on . 13 Finger Fan Leaf Ok, I'm not sure on how many fingers should be on your typical fan leave. I'm assuming 5 to 9 would be average. I found a fan leaf with 13 fingers on it. Yup, 13. Now, I think that is pretty amazing. Has anyone seen larger? If so, how many? Anyone want to see a picture? Rating: 5