I had some issues with Crystal Sea salt mix over time. I had more pods during that time but I lost coraline algae and clams. My results were in line with most people on RC as well. A lot of people also had sps bleaching. My tank's been happier going back to IO. I did notice that my pod population has decreased now back to where it was before I started using Crystal Sea though. So I'm almost certain that the salts had a role to play.
I don't know what the problem with Crystal Sea was. Reefs.org announced that Inland Aquatics was going to do a study of the salts 1.5 years ago but not sure where they are at now (The last I heard, they just ordered the equipment and were waiting for it so probably no tests performed yet). Probably doesn't matter now since the salt formulas probably have changed. So we will probably NEVER know what caused the urchin larvae to die in IO salt in Dr. Ron's test 1.5 years ago since IO's formula has already changed since then.
Keep us posted about your experience with Crystal Sea over time.
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