NL Auto (day 32), 12L pot. Watered 500ml (Dec 25), 700ml (Dec 28), 750ml (Dec 31). Substrate was dry before last watering. EC runoff: 1.07 mS/cm. Leaves drooped just after. Could this be from underwatering stress or slight overwatering? Photos added. 20/4, 23°C, 50% RH.