Simple method of dosing alk?

[ponokareefer]

Originally Posted by fkshiu

Bingo! Ca/Alk/Mg are all interlinked. You can't change one without affecting the other two.

I totally get that. For part of 2008, I was getting my magnesium level up, and until it was up, I couldn't get my alk & calcium high enough. After my magnesium level was at 1400, my calcium and alk levels were good. After I bought my largest clam, my magnesium levels stayed the same, calcium levels went in the high 400's, and alk dropped below acceptable levels. By adding alk, my alk comes back into an acceptable level, my calcium dropps into the low 400's, and my magnesium stays the same. Should I be adding calcium as well, even though what I am doing is keeping all levels in the acceptable levels?