It is a hydroponics system and awesome! I planted the lettuce seeds on 2/18 and they grew super fast. As long as you only trim the outer leaves and leave the base and middle of the lettuce alone, it will continue to grow. The system in the video is this one: https://www.amazon.com/iDOO-Hydroponics-Germination-Adjustable-ID-IG301/dp/B08DLMRKHM/ref=mp_s_a_1_3?crid=3UY5SDHQ7H4OT&keywords=idoo+hydroponics+growing+system&qid=1678665958&sprefix=idoo%2Caps%2C107&sr=8-3 though you can definitely find some cheaper ones that get the job done or even diy one yourself as all you need really is a good light, a container of fertilized water, and hydroponic sponges and pots.