14000k or 20000k

my new metal halide unit only has 10000k bulbs in and x4 actinic in and it currently gives my tank a lovely colour but was thinking about changing bulbs to either 14000k or 20000k and want some thing to give my corals good growth really like the colour of the 20000k bulbs but any info would be great !!!!!!
 
It's all about your personal preference -- what looks best to you? In my opinion, 20K is too blue. I prefer the 14K. But that's me. :)
 
7500k & 10000k will achieve best growth rate. 14000,15000 & 20000k are primarily used to make the color on the corals stand out more. I use 14000k b/c it's right in the middle.
 
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