[Picklee]

Just out of curiosity, what's the typical amount of magnesium (in ppm) in a tank that is at 12 dH?

 

[jones57742]

Just out of curiosity, what's the typical amount of magnesium (in ppm) in a tank that is at 12 dH?

National median is 20.

Please refer to
http://www.cyber-nook.com/water/tbl_acm.html

TR

 

[Picklee]

Okay, I need ppm and 20 ppm of Mg sounds a little low for an aquarium at 12 dH. That site provided information on drinking water, not aquarium water to maintain water hardness.