I’m fishless cycling my 58-gallon tank and in the past I’ve always used Kroger ammonia but when I went to the supermarket to pick some up it looks as though Kroger updated the label. It still says clear ammonia and it doesn’t foam when you shake it but they now added an ingredients list and it has a last ingredient of Quality Control Agent(S). Do you think it is still safe to use or should I look for something else without Quality Control Agent(S)? Thanks