04-19-2013, 06:53 PM
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I typically keep my new arrivals in QT for a period of 6 - 12 weeks, depending on if I see any issues. Many people on this forum will recommend a 4-week minimum, but I have seen serious problems occur the day before the 4 week mark, so. . . better safe than sorry to me!
You'll also have to decide if you wish to treat for possible problems. As Mitch said, many people do choose to medicate against parasites or heat treat for ich before seeing any signs of the illness. I do not, feeling that keeping the stress level of a new arrival low is the healthiest and kindest way to bring them home safely.
You'll want to consider putting a sponge or an extra filter cartridge into your main tank/filter (if possible) for a month or so before purchasing new fish. This way, when you get your QT tank set up and are ready to stock, you can use the 'extra' filter media to help cycle the QT tank and keep things stable for the newbies.
Last edited by Chesh; 04-19-2013 at 06:57 PM..