I have a 29 gallon tank, overall very healthy never had a problem. I lagged a water change last week and noticed a white spot. The guy at the fish store said it was ich but after much research I realized its more likely a fungal infection. I started treatment with primifix and aquarium salt. Just finished day 2 of treatment. My sick angel is in a hospital tank and I am currently treating both tanks for high nitrates and nitrites. I'm already noticing a difference in activity level and he finally has an appetite after not eating for days. But the fungus doesn't seem less and his belly is still bloated. Please look and the picture and help me confirm that it is for sure fungus and after treatment is complete, do I need to float fish in main tank and acclimate before adding him back in? Thank you for all your help!