Pull the two coral plus out and just run the blue plus. If you like the color of that, but want more blue, then consider adding one blue plus and one actinic. If you find the blue plus a little too blue, try adding one blue plus and just one coral plus or one actinic and one coral plus. A purple plus may be fine and is probably less white than the coral plus bulb. I run just 4 blue plus bulbs, as I don't care for the purple plus, and even just one coral plus bulb out of 4 is whiter than I like. I don't run an actinic, as I use my leds to get that "pop" that an actinic can provide. Since you have leds, you can use them to adjust your tank color. But because of the diffuse nature of t5s, just one white t5 bulb can tend to dominate the overall tank color.