theres a highly respected local reefer in my area and i was told by our LFS that he works on his tank every day(retired) and he digs his hands into the sand almost dailey to keep that fresh look, ive seen his tank online and its a totm kinda tank but my own experince i do pull the sand back from the glass once a month to clean the glass and have asked on this site a long time ago if thats ok and a bunch of reefers said yes, good luck, ive never had a problem