Does the seapora premixed saltwater contain any foundation elements such as magnesium, calcium etc?

Andreas' Reef

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Does the seapora premixed saltwater contain any foundation elements such as magnesium, calcium, and alkalinity? I moved and now I'm on municipal water instead of RO water. Does it contain it or do I have to add it?
 

Randy Holmes-Farley

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It has everything in it since it is made from normal IO salt mix, but it is a bit low in salinity, IMO, so will be a bit low in most ions, including calcium.

 

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