Sudden alk consumption

[Reefchix18]

Hi all! First time poster. My tank has been set up for a couple years now. I finally upgraded to a doser for my Alk and Ca. I was manually dosing about 20ml a day. I use BIonic. I get doser set up and my alk has been continuing to drop. Ca is also dropping. Mg is the same. My numbers today - alk 6.2 ca 280 mg >1500. No new corals. Only thing that’s new is the doser and I tested that to make sure it’s dosing properly and the proper amount. I even have it turned off. Any other thoughts?

 

[Randy Holmes-Farley]

Welcome to Reef2Reef!

I suspect the calcium number is not accurate.

Try your test method on some new salt water.