I've heard of a hempy bucket before. A grower on another board has just started a grow journal where he's using them. Your post gives a much better idea of how they actually work though. Even seeing pictures I was having a hard time understanding what, exactly, the other guy was doing.

It sounds like a hempy bucket avoids most of the mechanical issues that most hydro systems are prone to. I'm guessing you'd still have questions and/or problems regarding nute solution - mixture proportions, TDS strenght, pH, etc. But it sounds a lot simpler than most setups.

But does it still provide the benefits of the other hydro systems - namely, rapid growth?