Can't say for sure... Large plants use more water then small plants, but there are many more variables then size that dictate a plants water consumption. The age of the plant, container size, grow medium, temperature, humidity, and ventilation all contribute to water needs. Change any one of these variables, and the water consumption will change. Good ventilation is essential to promote a free flow of fluids, transpiration, and rapid growth. The healthier a plant, the faster it grows and the more water it needs.