An anemone tank?

[Patrice]

Hi,
RBTA are invading my little 25 gallons reef tank. They split every 3 to 5 months and it's a problem; they kill corals and take too much space.

Looks like I can't sell them up here in Yellowknife so I am thinking about moving the corals into an other tank and keep only anemones in the other tank.
I have been looking for information about tanks with only anemones but all I found is something about a guy who keep RBTA in a 65 gallons tank.

-What about keeping a few species in the same tank?
-Can I crowd them or will they need lots of room between each? right now, my RBTA likes to hang together in the same spot. Will it be the same it there is different species in there?

Thanks for your advices!