Lighting Comparison

So in a previous thread I asked what parts of my tank would be considered low/medium/hight lighting with my current lights. Now I've got another question. I was looking at getting a 4x24W T5 fixture and was wondering how that would change things as far as what areas would be considered low/med/high and how the output of these T5s would compare to my current PCs. Oh, and my tanks is roughly 17" deep. Thanks in advance.

 

Anyone?

 

The bottom of your tank would be medium/high light. Your medium and low lighting will be in partial shade and full shade.

 

Thanks!