David,
Coral Bleaching in nature seems to be completely different than what happens in captivity. Hyperoxygenation (=insanely colored)is usually the last stage that one sees before the coral completely expells all of its zooxanthelle and therefore dies. Very sad sight to see especially when a whole reef top is effected. But what was really interesting was how quickly the reef tops started to regenerate after that bleaching episode occured. I saw some reefs that had some corals that survived the episode (mainly LPS- Acans, Faviids, etc), but the really cool thing was how many new Acropora that were popping up all over the dead skeletons. The recruitment was pretty neat to see.
But a captive reef is different especially when these new chemicals are involved. Now take what I am thinking here lightly as I am not a expert when it comes to these new additives like Zeo, etc. I have plenty of customers that use it and they love it, but I have many more that don't use it and have amazing colors (just not quite as intense). If one goes to a pristine reef in Fiji, Palau, GBR, etc one will see some corals that are incredibly colored but most are just average or even brown. But one will almost never see an entire reef that is colored to the point of making you choke and pass out from amazement as you dive in. Now that being said this "European Reef " is a sight to behold but it sure reminds me of a nautural reef that is on its way out. Kinda like holding on but at any moment they are ready to let go. I think this reef is an extreme example. I am sure not all Zeo, etc tanks looks this way. Now if this reef holds on and does well for years to come then shame on me for giving a critique about something that I know almost nothing about... see notes above

But the point I want to stress is that 99% of pristine reefs do not have these kind of colors found in every coral on the reef. Just a guess but maybe 5 to 10% have really nice colors (in natural, non-stressful conditions). The only time you get colors like this across an entire reef is when a swath of hot water passes over the reef and sits there for a few weeks stressing the corals to the point of them expelling their symbiotic life giving algae. Any coincidence? I am not sure and I cannot make a judgement. But I always like to keep my captive reefs as simple as possible. The more crap you add the more chance you have for it to fail.
Take "my uninformed opinions" for what its worth= uninformed.
Chris @ RM
Maybe I can make an Audio Tape or a cheesy video that I could for all of you on the East Coast.

lol - Or someone can pay for my flight out there- to do my cheesy Talk on coral ID's
