I'd use Jungles Fungus Eliminator (also for bacterial) do more water changes while your tank is cycling, keep your light off, go easy on the food for a while, no food while medicating (I just had to use and fish went almost 7 days without food) keep tank as clean as possible. The directions will say dose and leave for 4 days then a 25% water change then dose again for another 4 days, but I'd do less with a good water change before you dose, dose it to directions then let go for 3 days, do more like a 33% water change then do full dose again for another 3-4 days depending on what you feel is needed, after this do as much of a water change is as possible so your fish can just swim on the bottom and fill back up and drive some carbon in the filter, then after a few days I'd do another water change and leave carbon in for a good week or more then remove. On all the water changes except the 33% change between re-doseing vaccum very good especially on the 90%+ water change, over vacuuming is a myth by the way it's impossible to "suck" off bacteria from your substrate in quanites that are measurable, maybe bacteria that is attached to the fish poo but that is one of the factors in making ammonia in an aquarium, along with fish respiration, you do that along with read a "fish in cycle" thread on this site that I believe is a sticky your fish with any luck will become healthy again.
Best of luck
With regards, Dolla
