metal halide recomendations

[smooth_9]

Hello I am looking for suggestions
I need to order two 250 watt MHs for a 55 gallon tank please inform on color temp. I am thinking about the 20,000k bulbs and good places to order from.
Thanks

 

[yetex]

How much of a blue color do you want?

 

[smooth_9]

I am not sure how much blue is recommended

 

[smooth_9]

do you have to use the same color bulb on both sides