Lighting Question

I have a 4 bulb T5 light with 4 x Dual Bluemoon LEDs. What are these LEDs for? I'm thinking just like a night lite type thing? Thanks
 
I have a 4" four bulb T5 light with 2 12000K whites and 2 blues which I just foundout isn't enough for most reefs so I'm looking for new bulbs or new LED lights
 
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