Suggestions on new T5's and MH bulbs

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Its time to replace my bulbs, I'm currently running 2 x 250w 14k coralvue bulbs and 4 x 39w giessmann actinics. My problem is that the MH's does not give much spread so I want to replace 2 of the actinics with whites. I like the tanks colour as it is so should I replace the MH bulbs with 16k aquamedics or even 20k giessmanns? I've seen tanks that are still getting great growth with 20k MH's.

What ya'll think?
 
If your tank is where you want it to be with growth and you like blue tanks then go for the 20K halides and actinics. This will slow your growth down due to the reduced PAR but your colours ofyour SPS's will be much more intense
 
The light on the halides isn't as blue as actinics
 
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