H2Ocean hands down. After switching to this salt from IO I experienced great sps growth and color without dosing anything at all. Started with regular bi-weekly 20% water changes then cut back to 10%. Before I started dosing, my parameters were bang on except for the alk which was a bit low Recently started dosing Ca, Alk, & Mg, might try cutting back water changes to monthly to save a few bucks on salt.
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