I've used a multi purpose compost that has 'trace nutrients', though they're not described in detail. I'm not sure what misting means, but if that's watering I don't do it during the day - only in the morning before it gets sunny or in the evening ditto. I actually thought that the leaves curling and falling of at the bottom of the plant was quite normal as I remembered something about 'primary' leaves doing this. As I started late with the plant it didn't bother me, but I thought I should check. Thanks for helping!