T4r I was doing my usual pre - sleepy time routine and while washing my face, I started having one of my "moments", 'cept this time there was near complete darkness with no sense of light. This then got me thinking about sensory deprivation tanks and how long would I be able to sit (or rather float) in one. I honestly don't think I'd be able to handle it for the length of time that's considered therapeutic, let alone an for any amount of time past that. That said, I'd still like to experience it one day.