Zoidar Posted April 25, 2021 Share Posted April 25, 2021 (edited) We had a tank with Ich. Since the corys were uninfected we moved the corys to an empty tank, and doing heat treatment on the main tank. Now I have heard that if we move back the corys to the main tank they may reintroduce ich, even they have no visible spots. Now I don't know what to do. Can corys spread ich, and how do you know if they have the parasite? /Peter Edited April 25, 2021 by Zoidar Link to comment Share on other sites More sharing options...
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