Wow, good thing your kid is okay! That must be pretty bad that he's sick all the time.
I have never seen a fish as sick as Holly. If you haven't done this, I'd sign up on tropicalfishkeeping.com and ask in their disease section. There might be more people on there with a clue as to what's happening to him, might be something uncommon. :)
I know warm water will treat fin dot and ich, and worsen fungus. This does not seem to be a fungus though.. If you can, raise the water to 80F then 82F a day or two later so he adjusts.. Higher temps do help their bodies fight disease.
Ok, I will do. I might wait until tomorrow to raise the temp to 80F as I only put the heater in today, so I don't want to raise it too quickly.
I'll check out that other forum too, thanks. Holly is in a bad way, isn't he? Poor little guy. I feel terrible about it, as I suspect I caused it. I wish I had found this forum when I first got holly, rather than just following the advice from the pet shop.
I have no idea what could be his problem, I think all the possibilities were covered in pasts posts. However I highly doubt it is being caused by not changing his water for 3 days. If his immune system was THAT weak, I think you would of lost him by now.
As for chemical burns - is his heater ok? That's the only thing I can think of and was the Jumping color gene ruled out as a possibility for his color change?
With daily water changes, his water should be super clean and his fins should be growing back....
from what I have heard, as long as the PH is stable, the betta should adjust to it.
Oh, I forgot to mention that the fin rot wasn't really fin rot. I didn't realise the tunnel I bought him when he first got sick had some sharp bits on it. Since I removed that, his fins are looking ok again.
I didn't have a heater in with him before, because it would overheat the tank, so it can't be that.
Jumping gene wasn't ruled out, but he got his colour back in the AQ salt, so we just assumed it was illness related.
I can't understand how he can be this sick but still be active, still flare and still eat so well. Nearly everything I've read says that a sick betta doesn't do those things.