Dude, go with a 5 gallon multiple bucket DWC setup with a gravity and control rez. With the slightest bit of plumbing knowledge to hook up fittings and float valve you could set this up. A chiller would also be in order. If you wanna grow hydro do it right the first time and avoid contraptions like the one at the top of the page that in 6 months will be in your storage closet with money wasted. If you want more info I can tell you what to buy and how to do it right. DWC will produce big trees with good yeilds. That 2 liter thing might get you something but will fail in comparison. Getting into growing can be very expensive when you break down the chillers ($400+), Lights ($300+), AC, Fans, PH controllers, TDS meters, Nutrients, and the list goes on and on. But if I had all the money I nickel and dimed away on bullshit I didn't need, I could by 3 systems. You go cheap, you grow cheap, Especially in hydro. Do it right the first time. Peace bro