I’m a member of a few reef and marine aquarium groups on Facebook and someone just posted that they lost their entire tank from a crash because they may have stirred up too much detritus while cleaning the sand during a water change. I was always under the assumption from info I’ve gotten in the past from LFS’s that you’re always supposed to clean and shift the sand around during water changes? Is this information wrong? Are you only supposed to swap out water during water changes and leave the sand bed alone? What do you experienced reefers recommend and how do you perform your water changes and/or clean your sand bed, if you ever do?