Lack of light for a tropical plant
It is the second main problem after overwatering, often met at growing of tropical plants indoors.
Symptoms of lack of light: the plant either does not grow, or its sprouts grow upwards. Leaves become darkly - green or grayish and is larger than the usual size, sometimes they begin to fade. The plant does not bloom; the growing point frequently dries up. It doesn’t form new buds. Leaves fall off, frequently green ones. The soil does not dry up for a long time, the plant “does not want to drink”.
The help: gradually move a plant to a lighter place. The longer it stood in a shadow, the smoothly should be this transition. If you can not increase natural illumination of a plant, use artificial lighting.
Usually the plant quickly reacts to increase of light. Already in couple of weeks it will develop new sprouts. The root system of a plant starts to develop (drying of soil becomes more intensive).