In Asia, most breeders/hobbyists, and many fish food producers use synthetic astaxanthin (CAROPHYLL® Pink) for red color enhancement, not micro-algae. Very common in the FH & discus biz in Thailand, Singapore, Vietnam, etc, where maximizing color seems to be the ultimate goal, whether it is natural or not. FYI - the synthetic forms of astaxanthin are also FAR less costly then the natural forms.
More info here: http://en.wikipedia.org/wiki/Astaxanthin
Alyhough in your own oppinion, according to the great link you supplied for me, the synthetic cp shoulnt need to be used over natural sources, anyone interesred in this topic should check the link in RD s previous post. I have much respect for you, and i am overly impressed with how your posting comments are so complete, factual, inclusive, and provide evidence to back up your sharings. You must have an emmense amount of expirence, esp. like the way you can go back years to find your own stored data to back up ur posts, you my friend must be extremely orgonized.
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