My powder blue that I’ve had for a year has had a couple of minor ich breakouts that I would notice one evening and would be gone the next day. He’s always seem happy otherwise. Recently, I added a lemon peel angel that was quarantined and treated for 5 weeks before adding to main tank. My lemon peel angel started not eating and died after two weeks and now my powder blue, from one day to the next, had this fuzzy stuff on it. I tried to catch it to quarantine and wasn’t able to until this morning. The fuzz came off but he has discoloration and patches of white/yellowish fuzz. See pictures attached. What is it and how should I treat it?
170 gallon tank
Nitrates 10
Phosphates 0.25
Ammonia 0
pH 8.0
Alk 7.2
Calcium 400
Salinity 1.025
Temp 78 degrees
170 gallon tank
Nitrates 10
Phosphates 0.25
Ammonia 0
pH 8.0
Alk 7.2
Calcium 400
Salinity 1.025
Temp 78 degrees


