Ideas on getting nitrates up

[scoobs]

Originally Posted by Myka

The boost of potassium, calcium, and sodium is probably not enough for you to notice.

Potassium nitrate boosts nitrate by 7.1 ppm for every 1 ppm potassium.
Calcium nitrate boosts nitrate by 3.1 ppm for every 1 ppm calcium.
Sodium nitrate boosts nitrates by 2.7 ppm for every 1 ppm sodium.

Apologies for dredging up this old thread, but am curious as to how these numbers came about. I would have thought the KNO3 would produce a K+ and NO3- equally.....must be more going on in the saltwater.