They are really neat. I am a ways off on further testing for the time being but I am sure that I will be posting about my progress as soon as it happens. Basically I need to setup the water system for it and find better fittings for connecting them together because the 1/2" to 1/2" unions that I have been using do not actually accommodate a good seal. I am working on another article about the dual turbine array that I initially built and tested and can hopefully get it posted by this evening.