help Understanding DkH trends

[m.kristoff]

Hello
I have been running my alkatronic for 6 weeks now. I can see that my DKH seems to be pretty stable- I believe it is.

I do see small fluctuations and am trying to figure out what they mean or have any meaning at all.

I do understand coral consumption a dkH goes up and down. I realize that these are very minute changes, but I am trying to get a better understanding of how dkH trends and what effects it. I get dkH my go higher at night, but not sure why it would during the day.

Tank Info:
Tank is 5 months old
I dose 1500ml of Kalkwasser.
The alkatroinic is testing 4 times a day
Have some Small SPS- very small
have several colonies of torches, hammers and frogspawn
Everything is doing well

 

[sixty_reefer]

Is the kalkwasser on a drip?

 

[m.kristoff]

Is the kalkwasser on a drip?

I am using my DOS with a Kalk Stirrer. 1500ml over 24 hours

 

[sixty_reefer]

I am using my DOS with a Kalk Stirrer. 1500ml over 24 hours

I would say it’s your kalkwasser, doing the small fluctuations, if you look at the test run at 13:00 in the past few days the dkh and ph are almost identical in all of the test made at that time.
You could try and spread the doses more if possible, if you want to reduce the fluctuations.

 

[m.kristoff]

I would say it’s your kalkwasser, doing the small fluctuations, if you look at the test run at 13:00 in the past few days the dkh and ph are almost identical in all of the test made at that time.
You could try and spread the doses more if possible, if you want to reduce the fluctuations.

thanks for the reply. You are probably right that it is the Kalk

What is considered a "stable" dkH? Am I incorrect to think that my dkH is stable?

 

[sixty_reefer]

thanks for the reply. You are probably right that it is the Kalk

What is considered a "stable" dkH? Am I incorrect to think that my dkH is stable?

They both seem fine to me as stability goes.

 

[Randy Holmes-Farley Verified Community Expert]

I'm not sure that any of these alk changes are statistically significant against the expected error of the machine, but in general, there's more alk use in a reef tank during the day, so if alk were to be dosed evenly 24/7, one would expect lower alk near the end of the light cycle and higher alk at the beginning of it.

 

[m.kristoff]

I'm not sure that any of these alk changes are statistically significant against the expected error of the machine, but in general, there's more alk use in a reef tank during the day, so if alk were to be dosed evenly 24/7, one would expect lower alk near the end of the light cycle and higher alk at the beginning of it.

makes sense. I also think that my tank is still young (5 months), but even with expected errors, I am interpreting it to be showing some stability.