Alk confusion Help

[PzReefer]

I would not really want to drop that much alk in 48 hours you should have just reduced the drip rate by 25-50 % and adjust over time slowly.

Only bad things happen fast in reefing.

Depending on water volume, and effluent output I am surprised your alk fell 4 dKH in 24 hours.

My tank is 125 gallon system with effluent drip rate of 55-60ml/min with effluent pH of 6.55. My outlet to the sump from the Ca Reactor has a tap to control the effluent drip rate and becomes plugged from time to time . Once i forgot to check it and only lost 1 dKH in 7 days.