Dont use chemicals that say they are a short cut. After learning about this cycle through my classes the cycle takes time. Mine took around 1.5 weeks but this change greatly on the type of algea that is in your tank. Sinc most of my live rock had this beneficial bacteria on it, it wuickly was able to reduce ammonia and nitrites. But like I said this GREATLY depends on what bacteria and algea survives and thrives in your tank. Every tank will be different no doubt so the longer you wait the better chance you have of harboring the better algea/bacteria. Again like others have said patience is your friend and use it to your advantage.