Okay the above poster MM WI is right, so let me try to explain. The guideline for anemone is usually about a 1year old tank, because with a tank as young as yours, the water parameters often changes. The guideline for the time is not just for the tank, as it get's more stable as it ages, but also for you to learn how to keep your tank more stable. Anemones are more sensitive, so your numbers have to be as stable as possible, which is hard to do when your tank is young and when you are inexperienced. But that is just a guideline. I can have a fairly new tank, but if I already have alot of experience and can keepp a tank stable even if new, then I can own an anemone.