My Echinata frag RTN last week, and I checked my Alk. It was 7.4, where it was 7.9 a few weeks earlier. Found out my stored Fritz salt water was at 6.9-7.0, where it was 7.9-8.0 a few weeks ago. I didn't do large water change yet, just small one to two gallon changes.
Not sure if it's only...