Deep Blue Professional - HYDROMAXX Pro Water Changer 25 ft. The new gold standard in aquarium maintenance. From the superior kink-resistant tubing to the solid brass faucet adapter, this water changer was designed to be the best. Includes 25 feet of hose, in-line shutoff valve, pro-quality T-pump, solid brass faucet adapter, 10" gravel tube and all necessary connectors and washers. 25ft hose. 10" gravel tube.