He's been missing for more than a few days now and just as I posted it and looked up at my tank, there he was swimming in front of the flow. I got a bit nervous there. First instinct was to inspect the carpet.
I have 2 clowns that stay to the right flow during the day and move towards the left flow at night, b/c the lights turn off and the sump/fuge light goes on, so they like that additional light.