Anyone using them with a tank that has a eurobrace? If so, what effect are you seeing in degradation punching down through the top? BTW, my tank is 30" deep with Favia and Acans on the bottom. Does these have enough juice to punch down that far?
All I have to say is visit WWC (Orlando) or Coral Corral (Tampa). They have literally hundreds of these things above their display tanks = insane coloration and they are atleast 30" deep tanks with the lights atleast 2 feet above the water. So although they are spotlighty you just need to go beserk and put as many fit above the tank high up. BTW What Acans are those in the middle with ~ 6 heads the ones that make my eyes squint b/c their so bright!!! I need those benny