Dosing Kalk and using a CARX

[WhatCouldGoWrong71]

Good Morning,
I’m trying to figure out stability and how to flat line this situation.

- 65 g system

CARX
- chamber PH 6.82
- 50 mills a minute
- currently shutting the co2 off from 22:00 to 06:00
- I was shutting it down for fear that DKH would increase even higher over night and also drive PH down

Kalk
- Dosing 100% evap between 22:00 and 10:00. Mixing the kalk at the max.

Testing
- Hacked my trident and testing Dkh 9, 12, 1:30, 3, 4:30, 6 and 7:30 for now until I see some progress (testing CA and MG once a day)

Update
- last night I left the CARX on all night. No impact to PH we will see what the 9:00 test looks like in 45 minutes. Anyone want to bet?

How can I get this more flat lined using kalk and CARX? Those DKH peaks are 09:00.

I forgot to add (lol) that I also dose sodium hydroxide from 13:00 to 17:00, 35 mil. My very heavy lighting period (full spectrum and T5s is from 10:00 to 17:00, then goes blue. Tank is 100% Acro which have all most started to take off and have tons of white tips in the tank.

Thanks for reading.

 

[Randy Holmes-Farley]

It's always a trade off when using kalkwasser/hydroxide. Add it at night to bring up the low ph. Add it during the day to stabilize alk. There's no simple solution to it that I know of (at least not by dose timing).

In fact, I do not know which is more important, and they are tied together in complex ways:

Alkalinity stability? pH stability? Are they even different?

It is currently the dogma of the reef aquarium hobby to say that alkalinity stability is very important for SPS corals, and that pH is not. Often, the very idea of someone trying to optimize pH is called “chasing numbers” as if that statement by itself shows it to be foolish. Since I have...

www.reef2reef.com

 

[WhatCouldGoWrong71]

It's always a trade off when using kalkwasser/hydroxide. Add it at night to bring up the low ph. Add it during the day to stabilize alk. There's no simple solution to it that I know of (at least not by dose timing).

In fact, I do not know which is more important, and they are tied together in complex ways:

Alkalinity stability? pH stability? Are they even different?

It is currently the dogma of the reef aquarium hobby to say that alkalinity stability is very important for SPS corals, and that pH is not. Often, the very idea of someone trying to optimize pH is called “chasing numbers” as if that statement by itself shows it to be foolish. Since I have...

www.reef2reef.com

Thanks Randy. I put a CARX on this system to learn how to use it over the last 7 months, as that is when I ordered my
New 400g peninsula, which is now only weeks away… pacing like a school girl on prom night. Sadly, I’ll be breaking this tank down to consolidate, man has this tank hit its stride.