You guessed it  . Instant Ocean. When I had my water tested for Mag test a couple weeks ago, it was low too. I have been dosing that too, but only once a week as instructed on the Kent bottle. Test kit to come.
From what I understand, if Mag isnt high enough, it is difficult to raise the Ca, correct?
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60 Gallon rimless, internal Herbie overflow, ATI Powermodule, Eheim 1250, 2X Tunze 6055, Tunze ATO, Euroreef RS100, Profilux controller, TLF Reactor.
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