Guys thanks so much... most of my corals are from online,fellow reefers and some local and by trades...
fonda this is my 1st time using 20k and I started with 1 bulb just to try em out and since I put em on with my 2 12k and saw the difference I decided to purchase the rest . I am happy with it and now I can get away of running my T5's for 13 hrs for supplementation. Now I run them 2 hrs before and 2 hrs after when MH is off.
Waxx- I like my maristar fixture and I am very happy with it..
Steve, I think you'll find you will like the colors you get with the 20K's. I also, use 2 10K's along with the 20K's alll 400's. And seem to get the best of both worlds. Growth and color. So I think I finally found the right combo that works well for me.