purple up enough for calcium?

[PzReefer]

I agree also that the magnesium levels are likely your cause of lower calcium levels. If you use a magnesium supplement like kents or seachem you could raise the Mg levels by about 50 ppm every couple of days over a week or so, to about 1400-1450 ppm then target your Ca at your desired level with a Ca supplement at about an increase of 15 ppm per couple of days after that.

My levels are as follows 1450 ppm Mg 440 Ca and Alk is 9.2 dKH.

I use a Calcium reactor with reef bones and Zeomag with an effluent drip rate of 80 ml/min and ph of 6.6 I have not added any other supplement for these three for over three months just check drip rates and monitor alk. check CA and MG once a month.

Pz