ALK drop after wc

[Heres_doe_]

Help me understand something how the hell did i get to alk that low. This batch keeps bringing my ALK lower everytime i do a WC. Fritz blue box.

 

[billyocean]

Is it because your probe is in your sump.and the pump is off for a bit during water change and it takes a minute to come back up? Or does it stay there?

 

[KrisReef]

Huge guess; Percipitation?

 

[Heres_doe_]

Is it because your probe is in your sump.and the pump is off for a bit during water change and it takes a minute to come back up? Or does it stay there?

I don't think you understood this. It's testing with trident so there is no probe for alk. And i water changes few hours before my next reading so i can get the most accurate reading.

 

[Heres_doe_]

Huge guess; Percipitation?

Idk tbh i don't think so water clear as hell and no build up of anything and this never gave me an issue

 

[Screwgunner]

Mine is the opposite I do a 30% water change and my alk goes from 7.8 to 9.2 but it drops over a few days to a middle reading. I use io and it has a alk of 10 so it is to be expected. Corals don't seem to mind.

 

[Heres_doe_]

Mine is the opposite I do a 30% water change and my alk goes from 7.8 to 9.2 but it drops over a few days to a middle reading. I use io and it has a alk of 10 so it is to be expected. Corals don't seem to mind.

I broke down that tank and currently running a 125 now no real issues now lol

 

[Randy Holmes-Farley Verified Community Expert]

I don't think you understood this. It's testing with trident so there is no probe for alk. And i water changes few hours before my next reading so i can get the most accurate reading.

Maybe the trident sucked in air bubbles or the new salt water was low in alk.

 

[HVRK23]

Have you tested the ALK of the water that you are using to do your water changes with? That would be my first step.

 

[Heres_doe_]

Have you tested the ALK of the water that you are using to do your water changes with? That would be my first step.

I didn't i already went thru that batch of salt. Never had that issue i think it was def that batch of salt.

 

[HVRK23]

I didn't i already went thru that batch of salt. Never had that issue i think it was def that batch of salt.

I recently had this issue because I was over mixing my Red Sea causing the ALK to drop to 6. I was making to large of a batch and started just making 5 gallons at a time and mixing for only 2 hours max.