Very very good quality clear light review. That reef is not eutrophic for sure, I really like how white lights lay bare the fine details. That has a very very mild green algae growth in places but it’s 99% still in balance, which in a large system like that carrying a bunch of fish, getting fed strongly, dinner plate sized corals laying mass, is really hard to keep as clean. That looks stellar even in the current state, fish are fat and healthy, it’s amazing to keep disease at bay in strong stocking levels like that, it really is. That tank is really being asked to carry significant bioloading