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Old 01-21-2014, 10:33 PM   #1
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I am trying to understand the importance of magnesium. I have read a couple online links but still hazy. I am testing and understand my calcium(440 ppm) and alkalinity(8.5) which is good. So what will dosing magnesium really help do?

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Old 01-21-2014, 10:52 PM   #2
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If your cal and alk are good you need not bother about mag. You only check mag if you have a problem with calc.

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Old 01-21-2014, 11:03 PM   #3
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Mag keeps the calc and alk from all combining and precipitating out. Do some YouTube searches for alk and calc as well as bulk reef supply, they have a great video that explains it.
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Old 01-22-2014, 07:46 AM   #4
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You mag should be approximately, 3 times you calcium for balance
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