Contains important magnesium.
Magnesium and calcium must be present in a balanced ratio for the optimal growth of corals and other invertebrates. The magnesium level should not be below 1,300 mg/l (ppm). The Sera Mg-Test kit provides information about the magnesium level.
This product ships to your doorstep. Most orders placed before 2pm ET on business days will ship out the same day.
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