nice.... thanks for the info Perry.
Depending on how things work out these could replace a closed loop nicely. Even though the upfront costs are higher, I would imagine that with our high electrical costs that $$ could be recouped in a reasonable amount of time.
A Sequence Dart = 3600 GPH (on a good day) @ 156 W, uncrontrollable
A vortec = 100 - 3000 GPH, variable, @ 40 W
So you could basically run 4 vortecs for the same amount of power as 1 sequence Dart on an OM 4 way, but you just have to be willing to dump those $$ up front for it.