10-31-2011, 03:49 PM
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If you're concerned about the stress, you can try just keeping the water extremely clean and the ich will likely go away on its own. The outbreaks are usually a result of stress. If you keep the water crystal clear and change a large percent of it daily, in about a week the ich should be gone or nearly gone. With the power outage and the stressful environment they were in, even though you tried your very best, it probably did make the ich worse. Heat/salt treatment is incredibly stressful on the fish, and medications are less so but still stressful. Coppersafe is an iffy one, I think.
Everyone has different opinions on treating ich, so I'd expect a couple more opinions to come in and then you can choose your favorite.