I've started using reef crystals a few days ago and it seems my alkalinity went way down! To about 1.59meq/L!!!! It was at about 3.5meq/L before I did about a 20gal water change with reef crystals on my 60 gal system. Calcium is at 450ppm right now as well. pH also went up from about 8.3 to 8.5. Specific gravity at 1.026, temp at 25.1 celsius. What the heck?