KH Director discrepancy

AZMSGT

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@AZMSGT did you make any progress?
To be honest I haven't. I did some re calibrations and had it reading at what I thought was close enough. 7.9 it read this for a couple days. Well the last two days it's dropped to 7.6 and 7.5.
There is nothing in my tank at the moment so it shouldn't just drop.
I got the reference solution and will monkey with it in a couple days.
Thanks for asking.
 

Brew12

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To be honest I haven't. I did some re calibrations and had it reading at what I thought was close enough. 7.9 it read this for a couple days. Well the last two days it's dropped to 7.6 and 7.5.
There is nothing in my tank at the moment so it shouldn't just drop.
I got the reference solution and will monkey with it in a couple days.
Thanks for asking.
I'm not sure exactly why, but if your tank is under 6 months old it can cause some alkalinity consumption. It can take quite awhile for an aquarium to reach a nice stable alkalinity even with no coral/coralline.
 

AZMSGT

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I'm not sure exactly why, but if your tank is under 6 months old it can cause some alkalinity consumption. It can take quite awhile for an aquarium to reach a nice stable alkalinity even with no coral/coralline.
Huh... didn’t know that.. good info. Thank you.
 

Brew12

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Rocks maybe absorb it?
I don't think rocks absorb it. It's more likely it reacts to stuff that breaks down on the rock. Carbonate is also used by some bacteria in large quantities. Lots of possible pH altering substances in a new system.
 

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