Chemistry question

[maksim serebro]

Hi, Im trying to understand what is happening to my tank. Its a 300 gal mixed reef. I utilize BRS 2 part via a dosing pump. Accidentally left the calcium on last night and the calcium went up from 380 to 440. Alkalinity was 7.5 I checked the levels again this morning (10 hrs later). Calcium went down to 400 (which makes sense) but Alkalinity went UP to 8.7 My question is why would an increase in calcium cause an increase in alkalinity? What am I missing? Thanks in advance for helping!

 

[twilliard]

@Randy Holmes-Farley
May be better over there

 

[maksim serebro]

Thanks, I'm searching through his posts now.

 

[zzzdiver]

I would repost in Randy's chemistry tread

 

[maksim serebro]

oh, ok, thanks

 

[Randy Holmes-Farley Verified Community Expert]

This is the other thread:

https://www.reef2reef.com/threads/chemistry-question.226589/