10k to 14K (SPS Changes)!!!

[ribber]

Was wanting to hear of anybody's experiences with changing from a 10K bulb down to a 14k bulb (the bulbs in question are from Giesmann 13kDE to a Hamilton 14kDE) I am mostly SPS and do have good growth right now but because I am running only one set of T5 pure actinic along with the halides there is not enough blue for my liking during the day, so I am looking for a little better color during the daytime. I have read alot about this but want peoples experiences.

I am running them on a Giesmann HQI ballast.

Thanks for any input.