My tank took about 4 and 1/2 weeks to cycle. I used a product called "cycle" which kept my peak levels low.(Advice from local fish store).
When I set up my QT/HT tank I let it cycle without any additives and the peak levels were much higher and more noticeable on the test kits. That "natural" cycle took about 4 weeks.
I think I wasted $$ on the additives the first time but I was following local fish store advice and using damsels to cycle and I wanted to keep the levels low to help the fish.
Take your time and save your $$$$.
Enjoy
![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)