You don't necessarily need metal halide for an anemone in a tank that size. Amazing advancments are being made with LEDs lighting. I know a guy who had a 250 softie tank and 500 sps reef (with many anemones, bta and carpets) all lit using LEDs. I have 2 150 w. units of T5 light over my 120 w/btas. I have used HQI lighting and have issues. I does provide beautiful light and an attractive shimmer but the heat is a big problem and the cost, well need I say more?