another important point that was highlighted (and this is very valid question)
how do we know how many trace elements our tanks need? every tank is different
the question is probably the most important.
the answer also is important - WE DONT KNOW! thats why the original balling system ONLY adds what you find in reef salt, so no different than doing a water change.
where as 2 part 3 part leaves out a huge chunk of that process round abouts we go "imbalance"
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