Connor Elliott Posted January 25, 2021 Share Posted January 25, 2021 If your fish becomes immune to a medication and it doesn’t work any more what is the next step up for bacterial and parasitic? Link to comment Share on other sites More sharing options...
Brandy Posted January 25, 2021 Share Posted January 25, 2021 Your fish cannot become "immune" to a medication. The medication can be the wrong kind for whatever you are trying to treat. Salt is often the easiest blanket resort for unspecified freshwater fish diseases. I sail in both fresh and salt water--boats that travel back and forth regularly have nothing growing on the bottom. This illustrates why we use salt--it is poison to fresh water life. We are counting on the fish being more tolerant to the salt than the disease. If you have a specific set of symptoms you are trying to treat you could try listing them and see if someone has suggestions. 1 Link to comment Share on other sites More sharing options...
Connor Elliott Posted January 25, 2021 Author Share Posted January 25, 2021 I guess I meant gram positive bacterial infections can become immune to medication. Link to comment Share on other sites More sharing options...
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