Zeithelden Posted July 17, 2020 Share Posted July 17, 2020 Hi guys! I’m hoping someone can help me figure out what is afflicting my corys, and how to treat it. For about two weeks now they’ve had a white sort of patchiness on their sides. One has a patch on his head. A couple have had some fins start to deteriorate. Things have stabilized, it seems, but they don’t seem to be getting better. When I first notice the infection, I started with the basics, testing water and I did a couple water changes. The tests showed the water had become a little too acidic, so I added a little salt, and put crushed coral into my filter and did a few more water tests after a day or so. Then, I started a basic round of pimafix and melafix, because I didn’t know what it was. I thought it was a fungal infection at first, but, after a decent amount of research, I still couldn’t determine exactly what it was. I did a few additional water changes and continued rounds of Pima and Mela, which has appeared to stabilize things, like I said. At the beginning of week two, I started adding some antibiotics (amoxicillin), to see if that would resolve it. It hasn’t seemed to have done much so far - today is day three of five. I should also say that it is not affecting all of the corys in the tank. There are about 12 total, but only about four have any kind of issue. Unfortunately they’re in my 90, which is very densely planted and I haven’t been able to pull them out to treat in a smaller tank. To do so, I think I’d have to pull up basically everything, which I will do if necessary. Can anyone help identify and treat this? Thanks! Link to comment Share on other sites More sharing options...
Zeithelden Posted July 22, 2020 Author Share Posted July 22, 2020 Just a quick update on these guys, in case anyone is interested! The corys seem to be healing after the amoxicillin treatment. I don't see any of the spots on them anymore, and the one whose tail had been decaying has grown quite a bit back. They've been more shy than typical these past couple days, so I haven't been able to get any good pictures of them, but I will once they're back to normal. I'm still not completely sure what was going on, but I think it's relatively safe to say it was a bacterial infection of some kind, since the amoxicillin seemingly worked. Although, it could have been a slow repair process after raising the gh and ph. Hopefully it doesn't return now that the treatment has stopped. I'll update with some photos when I can! Thanks! 1 Link to comment Share on other sites More sharing options...
Pat.Shaw Posted July 24, 2020 Share Posted July 24, 2020 Im having the same problem with my corys I got about 10 ago. Although I think they're at the every beginning stages of it. I just added erythromycin today to see if that will help. They have already gone though one round of general cure when I picked them up from the store. My first thought was columnaris but Im not sure yet. I don't have experience with these symptoms yet. How are your corys doing now? Also would you guess I have the same thing going on? (check pic) Thanks! 1 Link to comment Share on other sites More sharing options...
Zeithelden Posted July 24, 2020 Author Share Posted July 24, 2020 Hey Pat! Hard to say if it’s the same thing or not! What are your water parameters? Do any have any fins deteriorating? Or any other symptoms? Mine seemed like it was on them, not making its way beneath their skin. What I did was basically a small treatment of salt, added crushed coral, and did several water changes. Medication wise, I used melafix and pimafix for 1 week, then did five treatments with an antibiotic (amoxicillin). By the time the antibiotic was finished, it had cleared up more or less. Now, I don’t see anything remaining, aside from tail fins still regrowing. Hopefully they recover from whatever it is! I think I determined mine wasn’t columnaris, but it’s kinda hard to identify exactly what is wrong without some of the later term issues popping up. Columnaris also has varieties to it, as well, which only makes it harder. Good luck! Let me know if there’s anything else I can do to help 🙂 Link to comment Share on other sites More sharing options...
Pat.Shaw Posted July 24, 2020 Share Posted July 24, 2020 Thanks for reply, I have not seen any problems with any fins thus far. Water parameters from using tetra test strips are: Nitrate - 20ppm Nitrite - 0 GH - 100-150 ppm KH - 40-80ppm PH - 7.0 Temp - 79-82 I made a post about mine also. We will see if I get any tips on there. I will let you know if the Maracyn makes a difference or not. 1 Link to comment Share on other sites More sharing options...
Zeithelden Posted July 24, 2020 Author Share Posted July 24, 2020 Yeah, I’m not sure! If it is the same thing and the antibiotics resolve it, then that’ll be great and help affirm my thoughts. Do you have any better photos? Link to comment Share on other sites More sharing options...
Pat.Shaw Posted July 24, 2020 Share Posted July 24, 2020 I just took a few more pics. I will try to get a few more. These two pics are the same fish. 1 Link to comment Share on other sites More sharing options...
Pat.Shaw Posted July 24, 2020 Share Posted July 24, 2020 I hope to get a iphone upgrade soon 🙂 1 1 Link to comment Share on other sites More sharing options...
Zeithelden Posted July 24, 2020 Author Share Posted July 24, 2020 Oh, thanks for the better pictures! It does look very similar to what I was experiencing. Do a few days of Maracyn and let me know how it goes. You may want to add some salt too? Link to comment Share on other sites More sharing options...
Pat.Shaw Posted July 24, 2020 Share Posted July 24, 2020 Im a bit nervous to add salt to the aquarium because of the live plants. If the Maracyn does not help after about 5 days I will remove them to a separate tank and add salt. I will definitely keep you updated! Link to comment Share on other sites More sharing options...
Zeithelden Posted July 25, 2020 Author Share Posted July 25, 2020 I dosed a little less than it suggested and it worked out fine. No damage to the plants. 1 Link to comment Share on other sites More sharing options...
TGK Posted September 16, 2020 Share Posted September 16, 2020 Do you remember what dose you used for aquarium salt? Also have sick Corydoras in a planted tank 1 Link to comment Share on other sites More sharing options...
Ben Ellison Posted September 16, 2020 Share Posted September 16, 2020 I believe this will handle all ur questions 1 Link to comment Share on other sites More sharing options...
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