Hi there! The best treatment for fungus is a salt bath. Please make sure that the salt you use is a non-iodized salt, it's very important! Use another tank and add salt to it, then put your sick axolotl in it. Change the water each day and add salt after water changed. Fungus disappears after 24-48h if it is treated on time (it took 3 days in my case). I think there's a tutorial on how to do a salt bath somewhere... Good luck :happy: