After switching from AFR to Moonshiners I'm having trouble keeping my alkalinity up. Currently I'm at 7.8 and just increased from 2800 to 3600mls kalkwasser per day. Despite using a 5g carboy bottle with a stopper and small vent to minimize air exposure I still get lots of settling on the bottom. Tank is 135g. Is this normal? Can I reuse the kalk that settles or do I need to clean the container out each time?