Okay 3reef friends, I have been having a LED fixture for a few months.... It's the AI prime and it sits over a rimless 29 biocube.... I have a few zoa/poly frags, a couple ricordias, a green finger leather, a few mushrooms and two anemones (RBT & mini-maxi). My light cycle is a total of 9 hours. The cycle starts at 16% 20k and ramps up to 82% at 15k. I'm slowly going to 85%, reason being is my BTA reaches up, almost stretching upwards. And then it will ramp down back to 16% at 20k . I have the occasional algea in my sand bed, and I just lowered the kelvin to 15k from 15.5k. It only stays at 82% 15k for about 20min.... I would like some help in fine tunning my lighting. I have been in this hobby for around a year, but I'm even newer to LED's. Thanks for your help.