I would look into mag and alk first. You can add all the calcium additives you want but it will have little effect and may precipitate if your mag and alk aren't where they need to be.
Alk is 9. Mag is 1450 (I was dosing Tech-M to battle algae, so that is abnormally high right now). The sig chart will update with the new values sometime in the next 24 hours.
08-26-2012, 10:16 PM
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