Calc 400, Alk 90ppm, ph8.2
 

How do I raise my alk without increasing Ph to much?

I am using the OC alk mix.

I use Seachem Reef Builder Additive everyday. Works Great!!!

http://www.jlaquatics.com/product/sc...+-+1.2+KG.html

I use the Reef Builder also and it doesn't affect my pH at all.

Plain ol baking soda. It will actually lower your PH a little temporarily. Just add it slowly. You can use this calculator to tell you how much to use.
http://reef.diesyst.com/flashcalc/flashcalc.html

I used a better test kit and estimated my alk at 9.6, calc at 460, and ph around 8.1 i think.