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The Fertigator
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Choose the Right Product

Most jobs require only a FertiGator M1 (AR-1M), single injector with an 8-zone controller and perhaps an additional 8-zone controller. However, for more complex jobs, multiple application rates and products you might need a little help in designing a customer's system. We've come up with a chart and a spreadsheet to help you determine what FertiGator product you should install. But, if you have any questions or concerns, please feel to call Jon Lips at 1-877-337-8442 ext 11 and he can help you design your system.

The Chart
The chart below will help you determine what FertiGator product you need for your system. The size of the property is not relevant. System design determines what FertiGator product is right for your property.

-	The "Design Precipitation Rate" for the system is the amount of water applied over the course of a week through the sprinkler system during no rainfall. This is measured in inches per week. If you don't know, assume it is 3 for this purpose.
-	The "Fertilizer Application Rate" is determined from the package directions. Use 24 ounces per 1,000 square feet per month for FertiGrow fertilizers for this purpose.

How to Use This Chart
If, for example, you know that the system will put out about 3 inches of water in a week in periods of low rainfall and you will put the fertilizer out at 24 ounces per 1,000 square feet per month, the basic AR-1M Kit is appropriate so long as the GPM flow rates are less than 27. Remember, the size of the property does not matter. If the GPMs are between 27 and 55, then two injectors are required. You need either an M1 Dual (2 single injectors) or an M2 (one double injector).