If you are new to hydroponics or even just tired of building your own set ups- look no further. This is my favorite hydroponic set up and a method that was invented by nasa.
Utilizing 27 gal totes you are able to make a hydroponic set up as tall as need be for indoors. Personally i've used it in a stack of 3 to be able to allow roots to grow about 4-5 ft long in a span of only a few months. This item is made of pvc, pump, 27 gal totes, rockwool and puck.