Well, Its that time to replace my 4-54watt T5 bulbs in my fixture, I currently have 4 of the ATI blue plus bulbs(460nm) that I have been happy with. Cant decide if I want to try somthing different or stick with what I have. I also have 2 250watt 14k MH in same fixture that I just replaced.Tank is mostly sps lps. My thought going forward is splitting up from just the 460nm and going 2 460s and 2 420s. Or mabey another combo that anybody has experimented with that they really enjoyed. Thanks for any input