So I've realized that I didn't have enough light on my tank and instead of buying a second Kessil I made the switch to T5s. I love this light for color and growth on Zoas and LPS. I'm making the shift to more acros and this fixture does cause shadowing on sticks. Shoot me a PM if you are interested. This light has been run fully blue at approximately 70-80% for 4 months.