I have had a female dumbo betta fish for 2 years now. She has lived those years in the same tank, but we moved so I had to relocate her and set up her tank all over again. But after I put her in the new tank, everything just went downhill.
(Bit of a backstory) While I was setting up her new tank, the heater broke. We got a new one and it seemed to be working perfectly fine. We let the tank cycle for a while (But it was already pretty cycled because I used the same filter media and some of the same water. I even added some beneficial bacteria just in case) After a few days the tank water tested perfectly, everything was fine. I decided to put her into the tank. But I made a huge mistake, I forgot to acclimate her. I scooped her straight from the bag and put her into the water. She instantly darted around the tank frantically gasping for air and swimming faster than I have ever seen her swim. This lasted only a minute then she instantly hid in her floating log at the top of the water. I was very concerned but I brushed it off thinking she was just slightly stressed with her new tank.
The next morning I checked on her and found that the new heater wasn't set right and went up to 79 degrees. And at first that doesn't seem that bad but perviously the day before she was in a transport bag that was 71 degrees. So she was in a 71 degree transport bag - moved into a 76 degree tank with no acclamation - then overnight the heater hopped to 79 degrees! I checked the dial and it was on 76 degrees so I don't know why it was all the way up at 79. I went to return the heater and got a new trusted heater that worked fine.
But my betta was affected, obviously. She probably suffered from temperature shock, because she was lethargic, wouldn't eat (VERY unlike her), was gasping for air, looks pale, AND it looked like fin rot was affecting her fins, there even possibly might be a little pineconing going on. At this point I was overwhelmed. I just moved and her being at this state on top of everything else was just a lot on my plate. I treated her with aquarium salt (The only thing I could think to do) and started researching what I could do. But I had little luck, plus what else could I do other than give her an antibiotic? Her water levels were fine she was just severely stressed. I gave it a day to see what the aquarium salt would do, but nothing really happened. If anything, It got worse.
Within a days time I saw that now her fins had bad fin rot and red spots that looked like wounds. For the past couple days all she does is lay in her floating log and gasp for air. Even if someone gave me a medicine to use, I probably couldn't get it in time. I don't know what else I can do, I need someones help but I think it might be too late with her. So much is happening to her, I don't want her to keep suffering, but I really don't want to give up on her. If anyone has any ideas please let me know. Thanks.
I know it was a very bad mistake of mine to forget to acclimate her, I also know it has progressed very badly, but I haven't had much time to even treat her because this all happened within 2 days.