Its a 60 gallon tank with a couple of albino cat fish and a few tetras the fish that died was a molly i have 1 molly left and it looks fine i chage about 20-30% of the water.i dont know tge exact ammonia level i got it checked at pets at home and they advised about the water changes.
Ive got a problem i have high ammonia levels in my newish tank just lost my 1st fish and another one looks bad. Ive made regular water changes what else can i do.