is a measure of the total alkalinity in the tank. It is affected by many things including acids, CO2
, fish respiration, wastes as well as CaCO3
consuming animals as they build their skelatons.
It is more than likely the pull on the alk
is just higher than the consumption of Ca
. Tweeking the levels a bit to keep up is not abnormal IMO
. Instead of tweeking the equipment, I would just keep augmenting with the buffer as needed. Adjusting your equipment will not likley solve the problem.