My Birdsnest colonies can't get enough light. I have four 250W MH on Lumenarc Mini's over a 6', 135g tank. I also have two Magnum 8's and a Koralia 4 blowing the water around pretty good.
Interestingly enough, the bright pink one was grown from three 1" frags that I salvaged from a large colony that was way more spread-out (started to RTN). The frags grew into each other over the past two years into the tightly packed colony you see here. Looks much different than before. It also stays bright pink even underneath.
The other colony is some kind of Ponape hybrid, but not a true Ponape.