When do you know it’s time to start dosing calcium? My calcium has been on higher side for the last 2 or 3 months, but is now starting to drop just a little (419ppm) Do I let it get closer to the low side of normal before dosing? I’ve been dosing my alkalinity daily to keep it at 9.5 dkH for the last few weeks. Wasn’t sure if I need to keep calcium at a specific number or just within the normal range. I guess the better question is, what is a normal calcium swing and when would it be time to take action? Thanks!