This deluxe version of our Gravity Irrigation Kit ads 6 more XL Classics, a 12" rain screen for the top, an interior filter, and adapters for a total of 12 as well as a water level indicator that shows how much water is in your reservoir.  You can fill these with rainwater, the water that would normally go down the drain while you're waiting for it to get hot, from a pond, from a garden hose, or any good source. We designed this for a kind of simplicity that can make it extremely easy for people without much time, money, or mechanical skills. It's simple, complete, easy to set up, and inexpensive; but also, creates an easy way almost anyone can help keep more moisture in the ground, lower ambient air temperatures, prevent erosion, and keep the soil and plants more healthy. This represents only a small step in solving these environmental problems but it has solid benefits as well as providing a base learning curve for setting up larger systems in the future.