Well, Scott, the only thing is .. and .. well, you'll have to know what my feelings are on this one without me even saying it. If it is ritteri, your 20g is a temporary home at best, as nice as your 20g may be. As nice as this anemone is, I'm actually still hoping for you that it's a BTA. It would be more tolerant, should hopefully stay a more manageable size, and will be far less destructive to your reef inhabitants.
If it is a ritteri, it's bad news. This species has a tremendous energy output and will quickly starve if not fed adequately ... and it will very quickly outgrow the system if it is fed adequately. And it will just pound on your bioload. And, as I discovered through experience, it is very ill advised to try to manage the growth by reducing or eliminating feedings.
I'm sorry to sound like a downer, but I really do hope that we're all mistaken here and it's not a ritteri. If it IS a ritteri ... I suggest you start planning your upgrade now.
