06-21-2014, 06:24 PM
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So very sorry to hear about your cories. Yes, they did hang in there. For some reason, some fish will fight it for a long time, and others seem to die almost right away. I don't know why. I've had fish that were skin and bones, and looked terrible, yet soldiered on for another few weeks before dying. I think you are absolutely doing the right thing. And after you have broken down the tank and bleached everything, and have your tank set up again, never add a single fish again that hasn't been quarantined for at least 3 weeks. Some even recommend 4-6 weeks. I know I've had fish get sick after being quarantined for 2 weeks, so it might be wiser to quarantine longer. At least that way, you have a better chance of nipping any disease in the bud BEFORE it enters your main tank.