I don't like running in a "hope nothing happens mode", but at the same time, I needed a better solution than the closed loop for my tank. I REALLY don't like having power in side the tank either, so this was the best option. I may also go the route (mentioned in the other thread) of building a box to house the Vortechs. Don't know yet.
Also, if the issue (in the other thread) was a faulty pump, then that is also something that could happen with any power head inside the tank or any other piece of equipment. Which, could also lead to all kinds of problems, dead inhabitants, etc.
But, I don't want to turn this thread into a debate on the virtues of power heads (or Tunze) vs Vortechs, etc.