water is all good.I'm getting great growth from the majority of my corals...some slower than others, but growth on all never the less. using 8 t5's (g-man bulbs, 1 fiji purp, 2 blue plus, 6 actinic plus) tank is 48 x 24 x 20 tall. I actually have another Pocillopora (different colors) that is doing good, and this one was sitting about 3" away from it. They are sitting low in the tank, about the 18" mark down from the surface in a high flow area.