Nitrogen Source

[Shawn.B]

of Nitrogen
I should start off by saying I have been dosing potassium nitrate and potassium phosphate for some time now in my shoal grass tank without any issues.
I was looking around a online FW planted tank store and noticed they sell calcium nitrate and magnesium nitrate.
Now I'm wondering if it would be "safer" to switch my source of nitrogen to one of these and reduce the amount of potassium going into the tank. Thoughts anyone?

 

[Subsea]

Both calcium & magnesium are used readily in a reef tank. Not so much a need for potassium.