Here's the step by step method that worked for my 3 tanks:
1. Add water and water conditioner to tank.
2. Add fish. Wait 24 hrs.
3. Add the
entire bottle of TSS.
4. For the next 7 days do not change the water. Do not add Prime or any other chemical or water conditioner. Do not test water (the readings will be wonky and meaningless).
5. Test water on day 7. If not cycled, wait 3 more days. Test again on day 10. You should read 0 ammonia, 0
nitrite, and some amount of nitrAtes.
6. You're officially cycled. ...Or it didn't work, which means you can try again with TSS or fishless cycle.
Worked perfectly for me. Others have had less luck, but that seems to stem from user error or expired bottles. Good luck!