Originally posted by Pooh Tang
So, an old 30g tank would work good then?? What kind of pump or powerhead would you recommend?
if it is just going to be a refugium and is about the same height as the display, then a simple powerhead would work.
If it is going to be a sump and say 5' below or above the tank, then something like a mag5 may be needed.
Mine if 4-5' below my tank and the mag 5 really made a difference.
If you are going to have a large height difference, then a lot of the volume will have to be for insuring power out does not result in a flood. So perhaps 20g in normal running to allow 10g to flow from the display during power outages.
Hope that makes sense.