Low Mag

[Parker]

Hi All,

Tested my Mag last night ( Brand New Elos Kit ) and got results of 400. My WC water tests around 700 or so, I try to change at least 65-70 gallons every week but I've missed the last few weeks.

What would cause my mag to drop this low? Alk and Calc are within spec. All tested with ELOS kits that are fairly new.

I'm a bit of a dunce when it comes to chemistry sometimes.

Thank!