Does my BTA have enough room?

[gleconte]

I've got a BTA in a 20g long. I've basically given my BTA his own half of the tank. Regardless, he prefers to hide behind a piece of live rock and face the back of my tank. I know there could be a host of reasons why he moves, and to be honest i'm not too worried about him facing forward as long as he's healthy (which he seems to be, he's actually grown a couple inches), but I'm curious, is my tank simply not big enough for him?

 

[2Addicted]

It will outgrow your tank.

 

[davocean]

Eventually it will outgrow it, probably not that far away from that either.
Also hard to keep that small of a tank stable enough, and it will always be dangerously close to intakes/PH's.

 

[gleconte]

Alright. I'll move it to my larger tank then. Is there a species of anemone that would be more appropriate for this size?