Hi, I was wondering where you learned to build something like that? Would be really cool to make something like this but I wouldn't know were to start. So do you know of any good books or links that explain some details and setup ideas and stuff?

Forgive me for sounding stupid but from what I understand so far. You spray the roots with water and nutes from first tank, then water runs in to second tank and is then pumped back in to the first tank. Just seems like it should be more complicated than that? If it really is that easy it should be really easy and cheap to make and would definitely be the way to go for me.