hello all.. justsaw your pics, your girl is looking a bit sad indeed... in my experience.. if the tips of your leaves are turning brown first, it will be an issue with over-watering or poor drainage-either cut down on the water of cut more holes into the bottom of her container, i use a pencil, with an eraser on the end... push it into the soil and down about 5 cms or so.. if its muddy or very wet, then it is an overwatering issue. magnesium deficiency, in my experience, would show by a yellowing around the veins atfirst.. a sure sign. POtassium def. will show as grayish-brown spots of the edge of the leaves especially. other things to look out for will be twisting of the ends or top leaves-molybdenum def.