Hydroponics is a form of gardening that uses water, nutrients, and lighting. Basically, there are 3 phases included when growing with hydroponics and a few components.
First, you will need what is called a grow box or a hydroponic system. The grow box, or hydroponic system acts as an ecosystem to your indoor garden. Although you can place the grow box outdoors, the system is concealed from outside weather, therefore, it is always considered to be indoor gardening.