Sometimes QTing multiple saltwater fish in the same tank makes sense, other times it doesn’tAs regular Saltwater Smarts visitors are well aware, “Caribbean Chris” and I are strong proponents of quarantining all newly acquired fish for at least four weeks before introducing them to a display tank. But what about keeping two or more fish in the same quarantine tank (QT) simultaneously? Is that an acceptable practice? The answer to this question, as with so many aspects of marine aquarium keeping, depends on a variety of factors. Before proceeding with multiple-specimen quarantine, ask yourself these questions:Am I doing this just to save time in stocking a new tank? When contemplating the necessarily drawn-out process of quarantining all the livestock for a new display system, it might be tempting to think, “Hmm, if I just put all the specimens into quarantine at once, I can have a lively show tank in no time!” But this ignores the fact that whether you put all the specimens into the QT or display tank simultaneously, one sick fish among them will still infect the rest.
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