Plant Rusty/Brown Fan Leafs ONLY

My big leafs are a brown/rust color and the tips are bending and dying.
Please Help me
I attached a picture

i believe your ph may be too high sir.

How do I know if its too high or too low while I wait for my PH meter that i ordered.
Could it be something else?

it could be. but ph is likely the culprit. when your ph is out of whack nutrients dont get absorbed. that rusty looking burning, look thru a leaf at a light source, is the first sign of high ph.