I have a 4 bulb t5 setup on a 10 gallon nano and have 2 12000k and 2 actinic bulb that are in it as of now. This tank has a few nice lps and a few sps that are doing great and have awesome color to them. My question is how can i get a little more of a 20k look to my tank with t5's? I was thinking about replacing 12000k with another actinic but did not want to effect my light output so much that my nice lps and sps would not thrive anymore. As far as bulb options there is not alot out there due to the size, they are 18w t5's with a fixture total of 72w which is doing amazing. Any suggestions with out changing the whole fixture.


