Magnesium level won't stay up

[laurentb]

can someone explain me why a use 1 bottle of kent marine Magnesium every other week ? the mag level drop constantly. my Cal & Alk are stable. 420 ppm cal - 9 kdh alk maintain by Kalk reactor.

 

[Shooter7]

Here's a thread from the chemistry forum that might help:

http://www.reefcentral.com/forums/showthread.php?s=&threadid=850944&highlight=magnesium+dropping


Otherwise, I'd go directly to the chemistry forum and ask Randy himself. I just checked over there and he's there now.

 

[laurentb]

Thanks.

 

[DrBDC]

Retail magnesium supplement is very expensive since it takes so much. i.e. on a 75 gallon tank, it takes 14 oz just to raise mag by 100 ppm.

What are your current levels?