25c should be good. Some increase up to 26-27c if no live stock (some will even go higher).
What you are looking for first is a spike in ammonia (4-5 ppm
is good). Then you are going to look for a spike in nitrIte. Then finally you are going to look for zero ammonia, zero nitrIte and a spike in nitrAte.
After that you should be pretty good for livestock.