I went home for lunch and saw my flame angel breathing hard and fast while on its side. All the other fishes are fine. Only thing I did was my bi-weekly water change of 15 gallons, changed my 2 month old GFO via reactor and added more flow inside the tank. I also added an amp of Biodigest(my 6th week). Nothing out of the ordinary. Any ideas? Only parms I was able to check was my salinity(1.026) and temp is 78.5. I'll be checking the rest later tonight when I get home.