AFR accidental overdose advisement.

[Reign1]

I was adjusting my nightly Kalk dose (I do Kalk at night and AFR during day) on my apex Dos and accidentally reprogrammed the wrong side. I found that I had dosed 450ml AFR overnight in about 130gallon tank and caught it the next day.
Now I am dealing with the aftermath.
prior to this I was sitting around 8DKH. By the next evening (I was at work ) I was @ 10.1DKH.
I did a 10-15% water change to offset this .
This am I am sitting @ 11DKH. I plan on doing another WC this evening. I have of course turned off all dosing for now.
I may consider doing some muriatic acid if I get a steep rise as I am aware the ALK "bump" may still hit hard the next several days/week.
My main advise I am seeking is how long may I still see a sharp rise? Also If the main rise is going to hit where is best place to procure acid and amount to add.
Holding on for now ..
TIA

 

[JumboShrimp]

I'm basically a FOWLR guy, so of course you will get better advice from others on this... but 'partial water change'? "When the problem is pollution, the solution is dilution", no? Lol.

 

[rishma]

I think you’ll see the peak within 24 hrs. How do corals look?

 

[Reign1]

I think you’ll see the peak within 24 hrs. How do corals look?

looked fine first 10-15 hours. This am little less polyp extension on SPS (before lights on) water looked a little cloudy this but hard to tell with lights out.

 

[rishma]

The good-ish news is the AFR alk spike isn’t instant so perhaps the increase won’t be as stressful. I’d do water change you planned and then probably let it fall naturally to where you want it.

Acid is available from pool and some hardware stores. I know I’ve seen the dose in some threads so do a quick search. I would not personally add the acid to the tank because the alk and pH drop would be extra stress.

 

[Reign1]

The good-ish news is the AFR alk spike isn’t instant so perhaps the increase won’t be as stressful. I’d do water change you planned and then probably let it fall naturally to where you want it.

Acid is available from pool and some hardware stores. I know I’ve seen the dose in some threads so do a quick search. I would not personally add the acid to the tank because the alk and pH drop would be extra stress.

Yeah I was hoping to find out what the ceiling of the ALK boost may be. I am only planning on going with acid if it goes really high.
I will do another WC today and I hope it may start dropping slowly

 

[Randy Holmes-Farley Verified Community Expert]

Yeah I was hoping to find out what the ceiling of the ALK boost may be. I am only planning on going with acid if it goes really high.
I will do another WC today and I hope it may start dropping slowly

It’s about 5.5 dKH.

 

[Reign1]

It’s about 5.5 dKH.

Thank you for chiming in @Randy Holmes-Farley …
I was hoping I would see your response .. I will do another WC tonight and monitor.