Nitrite burns, very sick axolotl

[wetsock]

Just checked on my axolotl this morning and noticed he had blisters all along his side, head, and tail. Tested his water and for some reason my cycle crashed during the night and sent the ammonia and nitrite levels off the charts. I moved him to a quarantine tub with fresh, cool dechlorinated water as fast as possible and he isn't looking too hot. He still scratches his gills, he's been super lethargic, and is floating and recently tipping to his side. I'm not sure what to do and this point, is there anything I can do to help him?

 

[wetsock]

Here are some pictures for reference. I'm positive these are nitrite blisters

Any help would be really appreciated

 

[Skudo09]

Keep him in the tub for now with daily 100% water changes. Clean water will give him the best chance for recovery. You could maybe offer him a tea bath to help soothe the skin? The link below has a guide on how to give a tea bath.

Caudata Culture Articles - Illness Part 2

 

[charleybambino]

Is that just peeling skin on the back foot...or is it an anchor worm?