magnesium

[joby wan]

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?

[jeffaquarius]

If your cal and alk are good you need not bother about mag. You only check mag if you have a problem with calc.

[JonathanG]

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.

[Holygral]

You mag should be approximately, 3 times you calcium for balance