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Add part B and mix
World renowned professional Grasslin timer
The formula contains natural ingredients such as micro and macronutrients
They're designed at the highest performance standard
Green Power Commercial Contactor Grow Light Accessories Add part B and mixOverview The Green Power Commercial Contactor is for controlling multiple banks of HID lights, 12 light version. General Information These units send power to your HID lighting ballast bank by bank, reducing the surge you get from HID lights on start up. Green Power commercial units use heavy duty contactors and delays which allow you to switch HID lighting on safely. Additional safety is provided by the world renowned Grasslin timer which is powered