I have many years ago used Cycle. With so many plants, I may or may not have needed it anyway, but it was something of a "cushion" just to be safe.
I now recommend two products that are 100% bacteria, no chemicals or stuff. Seachem's Stability is one, and Tetra's Safe Start is the other. I have used the former.
Several years ago, Dr. Timothy Hovanec, a biologist, discovered the process for bottling live bacteria, and he had his own business. He sold the patent rights to Tetra, and SafeStart is that formula. Seachem's may not be identical, but it is bacteria and that is what matters.
Dr. Hovanec also discovered that the second bacterium in the nitrification cycle is not nitrobacter but nitrospira. There may be some other bacteria involved as well, but the main ones according to Dr. Hovanec's findings are nitrosomonas and nitrospira.
For those interested, here is a link to his papers on the bacteria: http://www.drtimsaquatics.com/Librar...ncePapers.html
The second, third and fourth abstract deal with the nitrifying bacteria discoveries, and there are links to the full scientific papers. The second tab from the left in the purple bar across the top, headed H2O Pure-Freshwater, takes you to his bacteria bottling info.