I see you like anemones! Is that three of them? I really hope they work out for you, but I have yet to be able to keep one healthy in my 10g, even with the 70w MH. Most people would suggest you not put an anemone in any tank less than 6 months to a year old, much less a 12g cube with poor lighting. I'm not trying to discourage you, but I want you to be prepared to be sucking out dead anemones and doing water changes to get the bad stuff out.
Also, I see those are condylactis anemones. Be very careful with those because they will sting the hell out of everything around them. I stood that a LFS and watched a condy and a carpet take turns stinging each other. It was quite funny.