Red Sea Mag Dosing

[Miller Aquatic]

So I have a 25 gallon cube and I tested my water at the lfs and my magnesium was 840. I don’t know how it got so low I only have mainly soft coral. I bought the Red Sea test kit and I got the Red Sea foundation pro magnesium dosing. I was wondering what my schedual for dosing daily should be.

 

[Miller Aquatic]

Oh yeah and I do bi weekly 25% water changes.

 

[Randy Holmes-Farley Verified Community Expert]

It’s almost certainly not that low. That could only be test error ot a massively bad salt mix, which is far less likely than test error.