Like the idea
1. add up all the power you are using to circ now and compare what you single pump is outputting...see if it is worth it.
2. Remember lots of piping equals lots of pressure drops. A powerhead get high flows because it has not height to push against and no pipes. So you may get less flowrate than what your pump is rated at.
3. It is not just all about flowrate. It is how it is pulsed through the system. I have seen many systems where alternating flows are used and the corals respond very well to them. Tunze wave maker is nice if you got cash to burn.
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