Lighting for a tank tank need help

[sharkboy99999]

I am setting up a frag tank 48" 20" 12" and want to like it with halide \t5 .
What metal halides should of us ? 2 250w or 2 170w or Other ? It'd going to be for sps trying go get good growth

 

[cleverbs]

2x 250w's 10k