If its in the 10,Then I just dont the water will ever be stable enough to support it.
As for lighting for an anemone,You need at the very minium 6 watts per gallon.
Ok,Now I'm getting it.
Your 30 should be alright for the anemone.
You can use the halides,But make sure you mount it high enough and have a small fan handy.
Anemones cant handle temp swings.