Replacing Bulb

[theotheragentm]

I have an old Current USA 48" CF fixture, and it's been quite a while since I've replaced the bulbs. I know it's the square pin style. What type of bulbs would this originally have come with, and what type of bulbs should I get if I want to boost the lighting? 6700/10000 & a straight 10000?

I'm confused. Any help would be appreciated. Thanks.

 

[theotheragentm]

I just realized my question isn't clear. I know 10k bulbs are a lot whiter I think I have a half blue/white bulb, which is less wattage for the plants, but it's softer on the eyes. Is there a website with combination of bulb pictures to show me what I may be looking at with different combinations?