Awesome! This is the exact data for which I was searching. Do you notice much shadowing? Not sure how often you use the Kessils without the Reef Brites (if ever).Kessils are each centered over a 2’ x 2’ area of tank and the reef brite is at the front of the tank and is angled towards the back of the tank. Kessils are 8” above the water. Reef brite is 4” above the water.