i have a tank with two silvertip catfish sharks,i have dim lights on it now, i'm really trying for the deep sea look, what should i do? i like the look of the blue antics but not sure, any opinions?

i would for sure go with the actinics, just decide if you like the blue actinic or the purple actinic, blue is 460nm and purple is 420nm

nah, its not really dimmer its just a different hue, i heard the blue is supposed to bring out more color in plants and corals but i prefer the purple hue myself, just got new lights and made sure the actinics were 420 nm before purchasing