I agree with the people who claimed thier zoos are small.
Under the current cheapo 300$ LED I experimented with 2 months now, my zoos flourish, but the heads are smaller when under the direct light. In the shade out of the way of the beam they are noticeably larger. Almost double. All my zoo colonies save one have doubled in size in the last 8 weeks. There is one exception however. One of them however has almost completely died off. It was flourishing at an amazing rate(4 heads to 15 in 30 days). Then all the sudden it wiped it self out. I suspect an infection of some kind, but I haven't researched it yet.
I'm only mildly concerned since it was an isolated incident involving some zoos I didnt really like anyways, so I pretty much got my wish. Maybe they got some of my negative energy
From the reading Ive heard, the majority of corals seem to do pretty good under LED's, infact I havent seen anyone claim they are bad for growth. Ive only seen satisfactory to amazing growth.
However I haven't seen anything regarding long term coloration of corals. But Im convinced they are worth it.
Last week I got a ricordia, it covered half the plug. Now only one corner of the plug is visible, it looks better at home than it did at the LFS. Ill get you some shots if your interested.