[Randall_James]

I have dosed kalkwasser for years and have mitigated my problems by limiting the amount available at any one time..

My system doses only at night for XX minutes per hour via digital timer and one of the tiny water pumps (converted air pump).

I can load 2 days worth of solution at a time (still sort of a pain to maintain) but if the system hangs up and dumps all into the tank over night, not a disaster.. just moderately high ph levels..

I still prefer a good sump with a reverse cycle but when I had all SPS, I could not maintain CA levels and so liked the dual function of the kalkwasser..