Replacing bulbs on 12g nano cube..?

[jcallesano]

So im definitly due for bulbs in my cube.

I need some help with the explaination of the the bulbs.
My cube hold (2) 24w linear PC's that are currently white and blue combo.

one says: http://www.jbjnanocube.com/contents/en-us/p10563.html
----which is the white and blue bulbs.

The other says: http://www.jbjnanocube.com/contents/en-us/p10560.html
------these are all white.

What do the numbers mean? ex. DAYLIGHT 10,000K - 12000 Kelvin

What is the benefit of the blue part of the bulb?

Would getting all white bulbs be too much?


Thanks for your help

 

[johntan]

I have the same system, with a mixed reef and just replaced those bulbs.
The 50/50 white/blue combo is better for coral than the all white I'm told, works great on my stuff, I'm even growing sps under these 50/50's