Some folks have it clear in two days, some folks have ongoing headaches due to not pre rinsing it for a clear start. If it’s a nano, redo it as a pre rinse. It’s so animals wont kick it up after the fact, or rock slides, or power head issues causing re clouding
if it’s a big tank, have to just wait.
notice how these didn’t quickly clear
10 days, still won't settle and clouds fully
https://www.reef2reef.com/threads/cloudy-tank.576835/
https://www.reef2reef.com/threads/bummer-could-use-some-help.558301/
Hi guy, I just add new special grade sand without rinse. I added slowly 1/3 bag per day, but didn’t rinse. My tank seem cloudy, but I have skimmer and 2 filter socks. My tank has sps, lps and 9 fishes. Should I expect a mini cycle. I concern my coral and fish die tomorrow
www.reef2reef.com
the majority will clear in two days. But if not, we can easily fix your issue by just pre rinsing the sand to clarity which harms nothing, and in fact is preferable to not rinsing. Nobody ever made a frustration post about their laser clear water, only unrinsed sand gets the frustration posts.