Quick ?

[WhatCouldGoWrong71]

It’s clear to see the relationship between MG and CA with the graph. Should all follow a little more inline to those two?

 

[Randy Holmes-Farley Verified Community Expert]

I do not understand the question or the graph. They do not move opposite one another for any reason.

Are you dosing them?

 

[WhatCouldGoWrong71]

I do not understand the question or the graph. They do not move opposite one another for any reason.

Are you dosing them?

The question was pretty loosely stated, my bad. By looking at the graph, you would think that as CA moves MF moves exactly the opposite. My understanding is that MG is (I’m not a chemist) like the glue that keeps Alk and Ca sort of all together. So if the graph is correct for CA and MG, should ALK look differently. Or, is there an issue with the graph that is representing MG and CA?

I dose ALK and CA. I also use a CARX that is woefully undersized. I have Mag chips in the CARX and will hand adjust MG occasionally if I get to 1325, but haven’t seen that number in several months. Also do Kalk.

 

[Randy Holmes-Farley Verified Community Expert]

As I indicated, there is never any scenario that can make calcium and magnesium move opposite the way the graph shows, aside from a highly contrived situation like a big salinity drop and a calcium dose at the same time, or a water change with off values.

I think there’s a testing issue.

 

[Randy Holmes-Farley Verified Community Expert]

The spikes in calcium and magnesium suggest testing interference of some sort, unless you did a big water change exactly then. A spike up can be dosing , a spike down is test error or a water change, but then it would not rise again.