Safely raising ALK

[HiImSean]

For those using baking soda to raise alk, I’m looking for guidance. I read I should not raise alk more then .5 a day. How much of part 2 in mL would this equate to?
Or should I just use this calculator and add about a tsp a day since it recommends 6.7tsp to raise it. I figure I’m going from 5.5 to 9, that’s a difference of 3.5. If I’m going up by 0.5 a day that would be a week of dosing. If it says 6.7tsp to bump it that’s right at a tsp a day

Reef Chemistry Calculator

 

[Randy Holmes-Farley Verified Community Expert]

The answer depends on which two part you are using, and yes, a calculator like that is perfect for this question.

Your plan sounds fine to me, but I'd be concerned the 5.5 dKH may not be accurate.

How did you measure it? How could it get that low?

 

[HiImSean]

I was using #2 part 2.
I test with my trident but double checked against my Hanna checker and Red Sea kit all reading about the same. I’m really not sure how it ended up so low. My Ca also dropped a good bit to about 360