I used a seachem addative to raise mine, half the recommended daily dose, and killed all my zoas, a cleaner shrimp, and a few dying LPS. Little did I know, and no warning from the unnamed seachem manufacturer, the Alk addative raises PH more than alkalinity. (the link I posted warns you of this, I had it sent to me after I posted a "whathe *uckis gong on" post.
I will use baking soda from now on until I can upgrade to a Ca reactor with C02.