Rmm method and Limewater

[MrPike]

Hello,

I’m wondering how much magnesium chloride/sulfate to add to my tank if I dose 10 gallons of limewater a week. I understand that I need 5-10% magnesium as I do calcium, so how does that calculate out when using limewater? Assume limewater is fully saturated.

Thanks!

 

[piranhaman00]

Why not just test mag?

 

[MrPike]

Rmm method is basically saying dose 5-10% of magnesium as you do calcium instead of testing magnesium, as the test kits are horrifically inconsistent.

 

[rennjidk]

Calcium for fully saturated kalk is 800mg/L. Add 5-10% of that for your magnesium.

 

[MrPike]

Calcium for fully saturated kalk is 800mg/L. Add 5-10% of that for your magnesium.

Perfect, thank you.