Quarantines can be useful for new purchases to help them adapt to aquarium life and allow for initial observation to prevent disease and pests from entering the display. However the quarantine still needs to be of adequate size for whatever species and fully established, meaning it runs all the time and not just setup when you need it. Removing fish from the display to a quarantine should be a last resort.
Popeye is not usually a killer, more than likely the stress involved caused the fish not to eat and then moving it put the stress level over the top resulting in death. I've seen popeye many times, I just leave it alone. More often than not the fish recovers completely, worst case is they loose vision in the one eye but still survive, very rarely do I see a fish die from it and if this is the case it's usually a result from no longer being able to compete for food with the new disability.
|