Acan's are inedible candy
Who cleans their sand and who doesn't? I have a deepish sand bed in my tank and don't clean it and never really have a problem but I do have the "gunk" look in the sandbed by the glass. Contemplating cleaning it to have white and clean sand at the glass panels. Sort of never paid attention to it but been seeing clean white sand beds up against the glass and it's making me reconsider.