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Dosing
Nutrient dosing functions on the GCX control system are designed for managing the nutrient levels and pH
in a stock tank for irrigation in drain-to-waste applications, or a continuosly recirculating type of hydroponic
system such as an undercurrent system. Stock tanks for irrigation can be coordinated with the irrigation
function to prevent dosing while the system is feeding.
• SXH, PHX or GXH series hydroponic sensor transmitter is used to monitor the water conditions.
• ADi series peristaltic dosing pumps are used to inject nutrients, ph buffers and ORP solutions.
• Recipes designate the dosing targets and component properties for the function to use.
When the function setting is enabled, it will monitor the sensor readings and compare them to the recipe. If
the recipe dictates a correction, the function will operate the assigned dosing pumps.
Recipes can contain up to 24 nutrient parts.
Hydroponics Sensor
1
Select the hydroponics sensor unit (1) that the dosing function will use to read the pH, conductivity (EC) and
other water properties. A hydroponics sensor must be connected to the system to use the dosing function.
1. Hydroponics Sensor
Select the hydro sensor for the reservoir to be dosed.
Recipe
The recipe contains the target set points for pH, conductivity and ORP, as well as the nutrient dosing formula.
If the desired recipe exists in the system library you can select it in the drop-down (1), otherwise the recipe
can be created using the recipe editor button (2).
1. Dosing Recipe Use the drop-down to select a recipe from the library.
2. Recipe Editor Open the recipe editor to create or modify dosing recipes.
1
2