I'm using the Coralvue 250w 12k and although i like the color I'm having serious problems with my corals anemones and even my crocea adjusting to them. My RBTA went from a dark red to pink all my LPS became lighter in color and even my softies like my Ricordia went from Orange to pink. I'm going with the Hamiltons 14k next. AFA the Seio I like it, not as poweful as the Tunze but because my tank only being 30" long it's enough I might get another one soon.
Mike you may want to give your fish a little more room....ROTFL