I disagree with this whole one year thing. I'm not going to say it's bad but I think it is unecessary in some instances. I got a sebae when my tank was three months old(after a 6 week cycle) and it has grown steadily for the past 4 months. I'm not trying to say after a week get one, but if you have had a tank with stable water parameters and you can see new life in your tank on a regular basis that means your tank is flourishing. I believe under proper tank conditions the proper beneficial bacteria needed to have a "stable" environment are achieved rather quickly. Make sure you research your specimen first and understand what it needs to survive. If you can provide that and you honestly feel your tank is ready then I say do it.