I agree with Hooked Newbie.
keep your ammonia levels below .25 and do as many (or as large) water changes that you have to in order to keep it below that. anything over that causes big problems.
usually when a fish "flashes" its because of a problem on the surface of their scales (the first assumption is external parasites) it could be that the high ammonia/ nitrite levels have made your fish's immune systems weak, and so made them suseptable to these parasites (which you may or may not be able to see in the beginning stages)
once you get the ammonia/nitrite/nitrate levels where they need to be, the fish's immune system will improve and there's a good chance the flashing problem (whether its parasites or not) will go away on its own. so i would definitely agree that getting the water taken care of is the first priority. good luck and keep us updated!
keep your ammonia levels below .25 and do as many (or as large) water changes that you have to in order to keep it below that. anything over that causes big problems.
usually when a fish "flashes" its because of a problem on the surface of their scales (the first assumption is external parasites) it could be that the high ammonia/ nitrite levels have made your fish's immune systems weak, and so made them suseptable to these parasites (which you may or may not be able to see in the beginning stages)
once you get the ammonia/nitrite/nitrate levels where they need to be, the fish's immune system will improve and there's a good chance the flashing problem (whether its parasites or not) will go away on its own. so i would definitely agree that getting the water taken care of is the first priority. good luck and keep us updated!