A: Lately, I haven't had to check on it too often. But in the summer, when it was growing its fastest, it was gaining upward of 30 pounds a day. The plant was drinking 20 to 30 gallons of water a day. My reservoirs, between the two of them, hold about 60 gallons. In order to keeping from running out of water, I would come out and add water and add nutrients, measure the pumpkin, check for bugs, check for diseases, check all the hose lines, make sure my pumps were functioning properly. It was a whole checklist I had to go through.