After experiencing a crash a bit ago, I have finally started restocking corals. I normally do water changes every two weeks, however I noticed via my trident that the alk ca and mg are holding pretty close to the mix values. I know with every water change there is risk, but having tested nitrate nitrite phosphate ammonia, everything is 0. So is there a downside to waiting maybe one more week, such as calcium precipitation? There’s also no reason I can’t do it every two weeks. I just keep reading so much negative news about the environment I’m trying not to be wasteful.