http://www.cavyrescue.co.uk/products/Sera-Nitrivec---500-ml.shtml
That is Nitrovec.
I had cycled my tank for about 2 weeks with 20 guppies, some of which are still very much alive.
Also, I can't see an article about cycling in the Articles section, and when i clicked a link in the "Water Chemistry for Beginners" article to the "Cycling" article, it said i did not have the correct permissions to view the page. Not sure what that's about...
I have performed maintenance 3 times in the three weeks I've had it set up.