I had two ottos in my 29 gal, this mornign they were both sucking on an algea waffer came home from work for lunch and one was stuck up against the filter intake stone white. I called him biggie cuz he was bigger then smally (the other otto) Im sure he died and then got stuck to the intake, I had watched both the ottos swim by the intake feel it suckin them in and then swim away, and it wasnt suckin that hard. I buried him in our flower garden in the front yard. 
