Athosanswered grow question 6 years ago They look over watered, which is why they are droopy. According to the information you posted, you are giving them the equivalent of half a gallon per day? If that's true then the droopiness is due too much water.
Consider giving them half a gallon per week each plant.
Just let the soil dry before watering again and they will be fine, else they roots will drown (too much water prevent the roots from taking oxygen).
Both under and over watering present droopy leaves, the difference is that under watering give leaves a dry and thin appearance and over watering give leaves a bumpy appearance..