Uvl super actinic bulbs

thanks,I got the icecap retro kit and it came with the super actinic blue , but I want a blue bulb, not purple. I'll try it thanks.
 
I have the 400w coralvue ballast with the reeflux12 k bulb, I want more blue so I got the radiums,ran them for six hours and they have a purple tint, will they change after a 100
hours? Thanks
 
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