Most Leaves turned brown and fell off
1
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My advice is to take it out, clean out all the death, check the roots(cut off any rotted black mushy ones) & give it new soil, mixing in perlite, vermiculite, sphagnum peat moss & coco coir can be a beneficial mix to use. I mix this at home often for lots of mine. These guys like partial sun/partial shade lighting. They need water about once every week and like to be misted often-helps with the humidity but for it to really be effective you have to mist about twice a day.