High pH, Low Alkalinity

[Mical]

As mentioned above I suspect your salinity is off. Something else to check - your Mag level, just a thought.

 

[bcarl77]

Was able to do a full parameter test.

Salinity: 35ppt
Calc:425ppm
Mg:1300
Alk:5.8dKH
Nitrate: 4ppm

Not sure how the alk is so out of line since I am dosing Kalk. I used pure RODI water for the past 3 days to get max pH to 8.4. Should I add some sodium bicarbonate to get the alk up?? How could it be so far off

 

[nereefpat]

...yes...use baking soda to dose for alk, as suggested several days ago.

 

[Keen4]

Measured 6.3 with Hanna checker and approximately 6.7 with Red Sea. At what point should I be concerned with the pH max?

Mine reads the same exact thing with Hanna. It measures total DKH not just bi- carbonates or just borate because it’s more difficult to measure those I’m told. I have high ph too. 8.6 and my dkh is low. 6.4. Just set up a Red Sea doser2

 

[k2-]

Did you ever get to the bottom of it ? Same here my dkh is low to 6.3 and Ph is about 8.15 (I have set it up that way) - any pointers will be appreciated here

 

[bcarl77]

I currently run my pH with a max of 8.75. Alk around 8-8.3. No issues and have heard others getting the same range

 

[k2-]

Thanks Carl, So did the issue resolved by itself ?