This device allows thorough internal washing of tumbled / dirty dive tanks with a minimum of handling. Consists of a modified tank stand (8.25" ID) with an adjustable, perforated metal tube which slips into any inverted tank placed in the stand; the tube can be connected to a water faucet by means of a short hose. Just set this entire assembly over a drain, attach the hose, turn on the water, and the internal sprinkler will flush the tank clean in a few minutes.