Lighting for an 8' tank what color T5s for coral

[Gsxkid]

So I have 2 175w MH and 4 4'T5 fixtures I have been planning to run. I have never ran the t5s before. There's a ton of color options for T5s and I don't know what to go with. The 2 175w MH are 15000K . I'm thinking I want some blue/purple on my tank. Looks like everyone's corals pop under that blue light. Again I have never had any coral bit I'm looking to start keeping them. What would be a good bulb to run with the MH

 

[EddieM]

I run 3-250w Phoenix 14K HQI and 4-39w T5's (2 ATI Blue Special + 2 ATI True Actinic.) Everything pops with this combo and great growth.

 

[this is me]

Are you sure 2x175W and 4' T5 will cover the 8' span of the tank? I'm not talking about adequate lighting but dark left and right side of the tank.

 

[Gsxkid]

I don't know I ran the 175 on my 4' tank and it looked fine. Figured it's 2 4' tanks. Plus I am adding the t5s that are 4 ' each. 2 over one side and 2 over the other. Figure the tanks going to have over 500watts on it roughly over 4 watts per gallon. I'm hopping it's enough lol