So I calculated at 8 gallons per minute of water from the hose, being on for about 30 minutes each watering session, I use about 250 gallons a water each watering period. I water on every 3rd of 4th day giving the plants about 1.5 inches of water each (15-20 gallons per row), for a total of about maybe 2.5in of water a week. I'm curious, how much does everyone else water their plants?