Light: bright, indirect light; direct sunlight will cause bleaching to the leaves.
Water: the plant until the soil is damp. Wait until the top of the soil is dry before watering it again. The plant begins to droop when water is needed but will perk up when hydrated. Over-watering will lead to root rot, which can kill the Nephthytis.
Toxic if ingested, keep out of reach of pets and young children.