Interesting... Are you getting the best coloration where the fixtures overlap?
I’m not exactly sure I completely understand what you are asking, I have the six bulb ATI fixture and then the two bulb fixture is right next to it . I wouldn’t say you could see any type of color overlapping because it’s just like adding two more bulbs to the fixture, just a little bit shorter. You can somewhat tell that it’s a little bit brighter in the center of the tank, but that’s also because my display is longer than my fixture so it naturally throws the balance off.