The Basic System includes a Root Feeder and a 5-Gal Reservoir. In less than a minute you can install it and fill it. Tree I.V. is most useful if you have a set of new trees that need weekly watering. The Reservoir gives you a consistent volume each time, empties at the normal percolation rate of your soil, and stops wasteful run-off for a good deep soaking. These components are industrial strength and cannot be easily damaged by lawn mowing equipment or vandals. Check out our discounted packages for volume pricing.