well i can assure you my system is not ulns. i feed like crazy and have a pretty simple setup. there have been several articles written about this. im gonna look around and see what i can find. i know there are also posts about this in other forums as well so i will try to find some......
i sometimes find it odd when its easier to say no or that its completely not possible than maybe consider it is possible......so let me clarify what im saying, not "ice white" but without pigmentation. like as if the coral were bleaching, or even moments from death!! yet beautiful, growing, thriving next to many many acros looking just as healthy with fantastic color and growing just the same. the reason i pointed out the euro and japanese set ups is that i myself was stunned to think that my coral was dying or some odd exception? only to find that they import these in other countries because they are an oddity in the coral world. plus also to find that upscales fish and reptile in portland, oregon here has them available as a frag for you. ask for travis the curator who has aided in the wonderful findings of the microlados and original oregon torte among many others. he will gladly take one for the proper price and you can have it in your very own aquarium. its a blue tip tenius without pigmentation in the entire body and base. there are also several deep water bottle brush acros with only color in tips. and some acros with no color what so ever.
the world was once flat, and sea life was not maintainable in home aquaria, as well as protien skimming was a farce.....is it not so believable that things can be out of our basic knowledge? gimme a a day or so and i will find ya some more info. im pretty certain one r.c. totm had some here as well.