Lighting question

[freezetyle]

I currently have a 20" 150w Sunpod over my 45 gallon cube. I think that this light is a bit small for my tank seeing as its width is 24". Now i have been getting some good growth and some amazing color.

I have been thinking about going to a 24" tek light T5. to get more of an even spread on the tank instead of the hotspots i get with the single Halide and add some more actinic light. but i don't want to sacrifice too much of the great color im getting.

Looking for some input from some of you more experience reefers.