marinetech Ca reactor...

[fishface]

so i've got a question for those who may be in the know. i've seemed to iron out the operation of the reactor for the most part, now it's time to tune it. i've read a bit and from what i gather, it mentions to get my alk in line and Ca will follow. well, alk seems to be rising but can't keep up with Ca, it's dropping rapidly to the point i had to add turbo Ca.

numbers as of today are: Ca 380ppm (and falling) alk 6.8dKH and rising and Mg 1380ppm. can anyone tell me what the deal is here?