I have bumped my dosing up the last 2 days. I'm not really sure how my alk dropped with what I programmed, but I bumped it up 5ml each day for 2 days, and with the reeftronics calculator its so easy to do it. Got my levels where I want them as of now. Alk at 8 and Cal at 420. I aslo added a Co2 scrubber tonight to help raise and stabilize my ph.