This coral is more than 10 years old. First it was under MH 10K and it was really growing but brown. Then I changed to 20K and started to look better, more blue but still a lot of brown. Then in June this year I installed a strip of blue ReefBrites leds and the colors and fluorescence is amazing! I also have Superactinic VHO's but the leds pop is unbeleivable.