Quote:
Originally Posted by tom g
this tank was topped off with tap water last three water changes and saltwater had been ro water .. is it possibility that the tap water has created this high alk in the system ...
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Ro or RODI? Whichever it is check your alk in the water you use to mix your saltwater. Whatever Alk it is at will add to the saltmix alk, so 7 DKH water and 8 DKH saltmix will mix up to 15 DKH.