10-03-2010, 10:15 AM
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I read a bit about this and considered it previously. If you keep snails or little fish in there to keep it cycled, you'd have to take them out either because you wouldn't want the fish to get sick, or snails wouldn't like salt or other treatments, so you'd have to have somewhere else to put them. I'm hopeless at getting fish out of tanks. Then, any antibiotics might kill the filter anyway. After you've treated, you wouldn't want to keep the filter material because it might transmit pathogens to the next lot of patients and you'd want to clean the tank thoroughly for the same reason. I'd figured that it would be easier just to set up my spare tank as required. The only downside would be the time it would take to fill and heat it - this could be overcome by leaving a tank running. Maybe I'm optimistic, but I hope I won't have to treat many fish, so I chose not to do it. I've got a spare tank which I can pull out if I need to quarantine a sick fish. Also, if your fish get ich, you have to treat the tank they are in, so a hospital tank isn't much use.