I've had the 6ft ficus for a year, and for six months nothing but serenity.
Then major leaf loss, not too worried but found it was root bound.
-Repotted, cleaned the roots trimmed the monster ones and then it got a mite infestation
-Treated the infestation successfully
-Still weeks after massive loss, but only from internal canopy, falling leaves a in good condition some with small dark tips, and some crinkled
-Yet I have great new young growth on the outer and especially top canopy
-Its watered once a week, sparingly so not to have wet pot
the pot is huge and has a drainage hole with saucer
-I mist the tree, two three times a week
Any one have any advice?
Would fertiziling it do any good?

Every morning its guess how many leaves its dropped!!

Please help