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treygarz
11/05/2009, 07:50 PM
Im not sure if this is in the right place but here is my question: What classifies an element as being "trace"? Iodide, strontium, calc, and mag are all considered to be trace elements. However the range of concentrations vastly differes (i.e. iodide = ~.01-.02ppm whereas calc = ~450 ppm). Just trying to determine where the cut-off level is for "trace". Thanks for the input!
Randy Holmes-Farley
11/05/2009, 07:54 PM
No, none of those are trace elements by most definitions. Iodine is the only marginal one, and is officially a minor ion. The others are all major ions of seawater. I discuss such things here:

What is seawater
http://reefkeeping.com/issues/2005-11/rhf/index.php
Flipper62
11/05/2009, 11:54 PM
No, none of those are trace elements by most definitions. Iodine is the only marginal one, and is officially a minor ion. The others are all major ions of seawater. I discuss such things here:

What is seawater
http://reefkeeping.com/issues/2005-11/rhf/index.php

Randy,

Thanks for reposting that. I had it before, but had to do a computer reboot & lost it.

Your Awesome.......:dance:
Randy Holmes-Farley
11/06/2009, 05:22 AM
:lol:

Thanks. :)