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- Sep 3, 2019
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I have been quarantining a pearlscale butterfly, bannerfish, and dartfish (in three different tanks). They are all eating well and i have treated them all with api general care. They are not showing any signs of ich, marine velvet, etc. im wondering if i will need to treat them with copper. In the past, all the fish that ive quarantined will usually go through copper treatment since ive lost hundreds or more from marine velvet. But is it even needed if they arent showing any signs?