Magnesium

[Lionfish 37]

Measuring my parameters this evening my Magnesium was at 1200. I want to get it to 1350. Would it be better to dose a little each day to get it there, or can I do it all in 1 shot without hurting anything?

 

[Randy Holmes-Farley Verified Community Expert]

Two issues, both based on it not really being that low at 35 ppt.

1. What is the salinity, and how are you measuring it?

2. Low magnesium is often test error.

 

[Lionfish 37]

Salinity is 1.025 measured by refractometer.

 

[Lionfish 37]

Two issues, both based on it not really being that low at 35 ppt.

1. What is the salinity, and how are you measuring it?

2. Low magnesium is often test error.

Salinity 1.025 measured by refractometer.

 

[Pistondog]

A little, 10 or 20 ppm each day, if you must raise it.

 

[Rugops]

Magnesium doesn't hurt anything. You are fine dosing up to 100 ml a day.

 

[Randy Holmes-Farley Verified Community Expert]

Boosting the salinity to the natural seawater average of 35 ppt (sg = 1.0264) will boost the magnesium to 1267 ppm, very close to the natural average of 1280 ppm. If you want it higher, I’d dose a bit.

 

[Lionfish 37]

Boosting the salinity to the natural seawater average of 35 ppt (sg = 1.0264) will boost the magnesium to 1267 ppm, very close to the natural average of 1280 ppm. If you want it higher, I’d dose a bit.

You were correct I retested Magnesium. It was a mistake for being at 1200, not sure what I did wrong. It was actually at 1275 but I'd still like to keep it over 1300.

 

[Randy Holmes-Farley Verified Community Expert]

You were correct I retested Magnesium. It was a mistake for being at 1200, not sure what I did wrong. It was actually at 1275 but I'd still like to keep it over 1300.

You can get there just by raising the salinity. :)