Thanks vh13, it took a while, but all credit has to go to heath robinson and jigfresh for inspiration.
so how does the hydroponic system work
hey bluntman, its pretty simple. The water is recirculated quickly to each level, separately, by using a heavy duty pump. The key with this system, as i've found from my 2 previous failures, is to keep a constant fast flow rate. As you can see from the pics, I have a pump connected to a homemade manifold with a bypass valve and separate stop valves for each level. These 4 valves are all used to adjust flow rate so the water isn't gushing out of the tubes onto my floor. One thing I think is key, or at least will improve the system, is it has no 90 elbows. These seem to interrupt the flow rate and leave you with slow running water, which can stagnate. If you look in the second to last pic, you can see the turbulent water flowing through the pipes. This is essential or else the whole sytem is not going to reach its potential. The concept is a combination of nutrient film technique (NFT) and deep water culture (DWC). The roots constantly have a fresh, aerated solution passing over them and are constantly suspended in water. The turbulence and mixing caused by the fast recirculation and the bypass valve from the pump, keep the solution consistently mixed and oxygenated. I've never completed a grow employing this method, but I believe using what I've learned on my other 2 tries, as well as inspiration from heath robinson and others who've tried this, I've got this shit.
My other 2 attempts failed due to a design flaw. I used 4 sides on 3 levels, with 90 elbows. This also made the whole shape less "round" so the plants were not all equidistant from the light. The elbows caused slowed water movement, the roots got a little slimey, and i tossed them. I guess I shouldn't say it failed because it would have technically worked, they were blooming, but I don't want it to just work, I want it to work correctly like the grandiose delusions I'm having in my head of 3gram/watt.... haha just kidding. Well, I'm not, I'd love 3g/w but 1.2-1.5 should be more attainable. Right now I'm about to go purchase a slightly less powerful ActiveAqua (hydrofarm) 1000gph pump which uses only 99w/.9amp instead of my current Mondi Sump Pump which is rated to 1595gph and 5.0amps! Ouch. Basically running another ballast full time. Peace.