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filter and powerhead
I have a magnum 350 filter...my friend is is somewhat experience with saltwater tanks mentioned most users use powerheads that move the water around...not real familiar with what he is talkin about....he said I shoudl buy a set of Koralia 3 or Koralia 4 powerheads. Would I use my current filter also with it or try and take my filter back as I have 30 days to do so....what exactly do the powerheads do and which setup would be better?
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