Hi, Over the past month, my alk keeps climbing steadily. I test the same time each week, and everything remains in line except the alk lately. Same salt since starting the tank over a year ago (RS Coral Pro). I change water the same time each week (10%). All rock has been in the tank for at least 6 months (last random pieces added then). Same test kit as always. Calcium 410 Mag 1320 Phos 0.25 Nitrate - 0 Nitrite - 0 Ammonia - 0 PH 8.2 Alk - used to be 8 four weeks ago, now is 16 Sal -1.026 I have always dosed kalk in my ATO but I guess I should stop? Why is this creeping up? How do I remedy safely without disrupting everything else? Mixed reef, with SPS, LPS, and softies. Macro algae as well. What ill effects can be expected with this high of number? Thanks!