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Originally Posted by teevee
i've heard of aquariums using IO as well...
if shimek tested all the brands of salt except CS, instead taking the CS specs off of the box, then to me the study is rather useless.
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I didn't like the trace element break down of Dr. Shimek's test either since those weren't gathered consistently (some were from old test results, some were from publications) and I ignore it. However, I don't think the test is completely useless and haven't seen a reason to discredit the results of the urchin tests itself. More uchin larvae died in one type of salterwater over the other. That's a fact. However way you decide to interpret the results is up to you. Some people believe that the causes of urchin larvae deaths might also be detrimental to other marine organisms so they change. Other people think that the causes of urchin larvae death will not be detrimental to other marine organisms so they won't change. To me, it doesn't matter if the reason was metal or not. As long as the experiment was controlled and all else remained equal, one salt had different results than the other. Of course he only tested from 1 bag of each salt I think (correct me if I'm wrong) and that was one of the issues with the experiment.
Now, if Dr. Mac and Son's Corals business decided to switch salts, I don't think its necessarily only because they can get a better salt deal with MEI. I think it is in their best interest to get the better salt. Suppose Crystal Sea was a bad salt and bleached all of their corals. That would ruin their business. By making this entire switch, they have shown a lot of faith in the Crystal Sea product.