How to increase alkalinity without messing up calciumf

[skypham817]

Hello my tank been running a year now. Its 250 total gallons

Currently dosing 550ml a plus 80ml all for reef a day. My tank is around 250 total volumes. Should I increase? My Alkalinity been dropping.
Basically Im using the brs 1.1ml a min to dose around 8 hour 30 min a day. Total 500 min x1.1 ml of kalkwasser
Doing the same thing with all for reef I dose 75 min a day. 75 min x 1.1 ml all for reef

Because all the frag are growing i think consumption of alkalinity go up. What is the best solution to raise alk without messing up calcium and magnesium

My last icp result:
Alk 6.0
Potassium 385
Magnesium 1393
Calcium 522
Ph 7.84
Salinity 34.9

 

[KrisReef]

I thought baking soda was the magic bullet? @Randy Holmes-Farley

 

[Randy Holmes-Farley Verified Community Expert]

Baking soda is a fine way to go.

 

[mpatterson42]

Do people dose baking soda directly into their tank? I'm always scared to do that so I use it to raise the alkalinity in my saltwater mixing station first and then check the levels. I've definitely overshot before and had to dump the water in the mixing station.

 

[Randy Holmes-Farley Verified Community Expert]

Do people dose baking soda directly into their tank? I'm always scared to do that so I use it to raise the alkalinity in my saltwater mixing station first and then check the levels. I've definitely overshot before and had to dump the water in the mixing station.

It’s best to dissolve the calculated amount in fresh water first. But overshoot is not an issue if you use a good calculator:

https://reef.diesyst.com/chemcalc/chem_calc3.html

 

[mpatterson42]

It’s best to dissolve the calculated amount in fresh water first. But overshoot is not an issue if you use a good calculator:

https://reef.diesyst.com/chemcalc/chem_calc3.html

Yeah, that's what I used, my issue is I forgot the difference between a teaspoon and a tablespoon who decided to make it tsp and tbsp??