My current system started with dry rocks, dry sand, fiji mud, and a bottle of bactiv8. I let it go a couple weeks and added some caulerpa, a fish, pistol shrimp, and some snails and crabs. Then i let it go a month before i added more macro algae. I noticed several stages of algae growth, starting from brown to red to green then it all disappeared...thought that was the end but then all of a sudden cyano hit.... i watched it for a month all the while dosing bactiv8.. After that month, the cyano went away and hasnt came back.. I am guessing my cycle took me 3 months from start to finish.