Used to optimize conditions for the development of a well-balanced root structure, Root 66™ is a unique composition seaweed extract and other nutrients. After using it just once, it will likely become a vital part of your feeding program for overall plant growth and performance. When transplanting, it will help facilitate a smooth transition between growth stages by reducing transplant-related shock and related stress conditions. It can be applied to soil, soilless and hydroponic based gardening mediums, and can be used in conjunction with any premium quality fertilizer. It is compatible for use with all Technaflora products or any premium quality soluble fertilizer.