My calcium levels jumped very high (600+) after dosing about 6-8 weeks ago. I havnt dosed since of course. I have watched it very very slowly drop over the weeks since, even performing small water changes with lower salinity salt. It has managed to make its way down to the 530-540 range but has not dropped any further in probably 2 weeks. Im puzzled as to what could be causing this. I keep alk stable at around 7-8. Its a mixed reef that required calcium dosing every day to keep calc up, I dosed to much over the course of a week and have since had the issue with it not dropping. Are water changes going to be the only way to get my calc down or is something else at play here? I figure the calc would drop slowly as it is consumed but it's still not budging. Any help would be greatly appreciated as I've been dealing with this for weeks now! Thanks!