Automatic Gravity Feed Drip Irrigation from a Rainwater Tank

Thie attached article addresses the question of how to water your garden using gravity feed drip irrigation from a rainwater tank when you are on holidays.

If you use a conventional programmed irrigation controller with gravity feed irrigation, the dripper discharge will vary as the water level in the tank changes. This is not a problem with measured irrigation.

A second problem with using a rainwater tank is that the tank may run dry when you are on holidays. If you have access to mains water, this problem can be solved by connecting a part fill valve to your tank.

If your tank is at ground level, the water pressure may be inadequate when the tank is almost empty. The convention solution to the problem is to use a pump. However, a suitable pump may be expensive and there will be ongoing costs for power. A less expensive approach is to use a small header tank and to use a small inexpensive transfer pump to slowly refill the header tank between irrigation events.

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Taxonomy

• Agriculture
• Technology
• Water Supply
• Water preservation