Sick

I have had a terrible week with my finned friends. I've lost a total of 8 fish this week, more than I've lost in the past few years combined. After 3 visits to the pet store, 2 rounds of water testing, 3 water changes, 3 different foods tested, and day after day of scooping out the dead fish in the mornings, I think I may have found a solution. It appears the ammonia level was elevated in the tank. Who would have known? I have every chemical and testing product I need to save these fish (if that is in fact, the cause). Guess only time will tell, but I can tell you one thing, not one stone was left unturned to save my 12/$1.49 fish from 5 years ago. Wish me luck!