Kits come with a choice of powdered nutrient or liquid nutrients .
These starter kits come in three different sizes as well. All kits come with a liquid pH test kit and instructions. The Medium Kit comes with five pounds of nutrient and two quarts of pH adjuster and will make 500 gallons of full strength nutrient solution. The Large Kit includes twenty five pounds of nutrient and two gallons of pH adjuster and will make 2500 gallons of full strength nutrient solution. Liquid fertilizers cost a bit more than the powdered nutrients but they are easier to use and are a more refined source of nutrient.