as the guppiman said, start small. a couple damsils, then some cleaners about a week and a half in. If you want to take a chance (depending on what type of fish you are plannin on stocking you tank with) and get a hardy fish at about 2 weeks. Dont spend to much on this one though. After about 4 weeks your good to go and you can start having fun with it. If you have alot of live rock in your tank now (over 55 lbs) you will be completly cycled in a little over 2 weeks though