Water Chemistry

Ive been using this stuff for about 2 months now and all was well. After my water testing today Ive found my Ca was 410 (good) but my Alk/Kh is 11.5. Ive seen this slowly rise the last 2 weeks but Im not too sure how to lower it. I currently dose 10ml of each into my 42 cube. Is it really as easy as just lowering the Alk dose and keeping the Ca dose at a normal 10ml or is there more to it? The only reason I ask is because the bottle says "add in equal doses". a full water report reads: ...