Please don't use cloudy ammonia. The "cloudy" part is detergent. Not an ideal thing for your tank.
Now that we can no longer buy the clear ammonia, we have to resort to what fish keepers did years ago, a green prawn or two in the tank, or a small contribution from a healthy human.
Fishgeek is perfectly correct. It's an ideal source of ammonia, and it's cheap and plentiful
That said, when I run out of clear ammonia, I'll be sticking with the green prawns