Hello, Yes, I built them myself. I studied designs of new units, and other home made units. My affordable aeroponics totes are the best of all of the other ideas I saw. Simple, affordable, and easy to maintain. I made a 6-site vegging tote, and now I'm building a new 6-site flowering tote. I just finished my first batch of clones in my 12 -site cloner tote. All you need is a 37 gallon rubbermaid roughneck tote, a 264 gph submersible pump, a few plumbing parts(tees, elbows, 3/4" pvc), and a few 360 degree sprayers available at most hydroponics stores. I had fun, and saved money.