I have a couple QT. My display is 90 gallon, the biggest QT is a 40B. The reasoning is sometimes I want to add more than one fish at once. Or, maybe I want to add a pair of Banggai, so I buy a group, and when a pair forms I move it to the display. Or a shoal of Yellow Tail Damsels or Anthias. I also have a 10-gallon QT for small fish (or a pair of Clowns).
I imagine you're going to have a few big fish, like Tangs maybe? They are very active of course. I would want a 48" tank as QT once some bigger fish come along. Before that, a 50-gallon would be a nice size. Fit it in somehow!
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~ Mindy
SPS fanatic.
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