Lighting question

[jintz]

I plan on getting power compact retrofit lighting for my 125 gallon tank. The dimensions of the tank are 60 x 18 x 24. I plan on fish with live rock and a bubble coral...inverts also. The bubble coral will be the only coral I will get. Ive seen power compacts with white bulbs and light purplish fluorescent bulbs. What are the purpose of both bulbs?
Here are the specs for the lighting :
18" Aqualight™ Retrofit - 1 96 Watt 4-Tube (quad) 50/50™ Compact fluorescent Lamp Square Pin Base
24" Aqualight™ Retrofit - 1-65 watt True Actinic 03 and 1-65 watt 10,000K™ Daylight Compact Fluorescent Lamps Straight Pin Base
36" Aqualight™ Retrofit - 1-96 watt True Actinic 03 and 1-96 watt 10,000K™ Daylight Compact Fluorescent Lamps Square Pin Base
48" Aqualight™ Retrofit - 2-65 watt Actinic and 2-65 watt 10,000K™ Daylight Compact Fluorescent Lamps Straight Pin Base
72" Aqualight™ Retrofit - 2-96 watt True Actinic 03 and 2-96 watt 10,000K™ Daylight Compact Fluorescent Lamps Square Pin Base

 

[scsinet]

Generally when any light source of under about 12000K is used, it appears yellow in the tank, so people supplement with Actinic, which is a very blue light. It causes the corals to fluoresce (glow) and it evens out the appearance of the lighting.

 

[jintz]

Im also trying to figure out which would be the proper size/wattage for my particular tank. Something that would be beneficial for the inverts and the bubble coral as well.