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Originally Posted by Kevin1000
The only consistent complaints about Oceanic that I have read are low alk and James complaining about mag levels running a little high. Low alk is a no brainer to solve ... not sure about the mag issue but it seems to me that Oceanic levels of mag are only about 10% above norm. While I have read a number of articles discussing problems of having insuficient mag I have yet to read an article which would indicate that a minor increase in mag would create any problem (and please don't quote the article discussing Mega loading mag to help open oysters  )
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my batch was significantly high. the
salifert test chart goes to 1500ppm and i was well above that.
aside from this, i have to say that there appears to be a dearth of information that pertains to marine organisms and magnesium toxicity. it stands to reason that there would be a toxic level given that the few studies i have found show freshwater crustaceans being particularly succeptable to magnesium poisoning and also, some marine crustaceans were shown to be quite succeptable to strontium poisoning which has been described as chemically similiar to magnesium.
also Toonen seems to think toxic poisoning is worth pondering as he advises here...
http://reefs.org/phpBB2/viewtopic.ph...esium+toxicity
as does
Randy Holmes-Farley (not linking any of his topics for the oyster content

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there are others but my time is over spent on this topic.
i am not a chemist in any form of the word, i find it to be a confusing topic and i wouldn't steer clear of Oceanic on this one principle alone... but the fact is that i am now concerned about the integrity of the product as pertaining to the measures that i can't determine in my home.
how can i be sure they haven't thrown in extra strontium, molydnenum, copper, iron, boron or whatever other trace element that was in vogue at one time?
i tire of the wacky potions involved in this hobby