Chemistry Question

[Nikko]

Hey! Will get right to point.
Normal ranges:
DKH: 8.2
CA: 440
MG: 1400

Doser went nuts: DKH jumps to 15.1
Immediately noticed and water change made.
DK drops to 11. Drops back down to normal levels 3 days later.

Noticeable effect: MG drops significantly to around 1240 (in part due to lower MG in salt but still far less than normal).

CA goes up to around 490 and is staying there (likely due to low MG uprake).

PH goes from 8.2 to close to 8.4. This is unusually high. Would this be an expected impact due to a short DKH spike?

Thanks for any time spent reading and/or responding!

 

[Spare time]

Hey! Will get right to point.
Normal ranges:
DKH: 8.2
CA: 440
MG: 1400

Doser went nuts: DKH jumps to 15.1
Immediately noticed and water change made.
DK drops to 11. Drops back down to normal levels 3 days later.

Noticeable effect: MG drops significantly to around 1240 (in part due to lower MG in salt but still far less than normal).

CA goes up to around 490 and is staying there (likely due to low MG uprake).

PH goes from 8.2 to close to 8.4. This is unusually high. Would this be an expected impact due to a short DKH spike?

Thanks for any time spent reading and/or responding!

Yes dosing a large amount of alk (unless it is just bicarb) will raise the pH. That is normal.

 

[Nikko]

Got it, thanks @Spare time !

 

[Randy Holmes-Farley Verified Community Expert]

The magnesium and calcium changes are purely test error. Calcium does not rise from an alk overdose, and magnesium cannot ever decline 160 ppm in 3 days.

if you somehow overdosed more calcium than alk, calcium can rise from that.