What constitutes an Alk swing?

[cwegescheide]

I was just reading a post on the SPS forum talking about STN and causes of it being Alk swings. So my question is what constitutes a n Alk swing? How much of an increase/decrease of Alk within a day(s) would stress SPS into STN?

My alk for instance fluctuates between 4.0 meq/L - 3.7 meq/L in a week.

 

[Randy Holmes-Farley]

No, that wouldn't cause a problem. I'm not convinced you'd see any problem as long as the alk stayed within normal limits (say, about 2.5-4 meq/L)

 

[cwegescheide]

OK Randy so what your saying is that just as long as the alkalinity stays between 4.0meq/L - 2.5meq/L no matter how quickly it goes from 2.5 - 4.0 should not have any negative effects to SPS???

Thanks Randy.

Chris

 

[Randy Holmes-Farley]

That would be my expectation, yes. Folks that use two part additives experience such swings between additions, and seem to do fine.