Philips Dreamstation Water Chamber Philips DreamStation Water Chamber Tank Tub Container CPAP SleepCare Operating the Water Chamber of your Philips Respironics Dreamstation 2 DreamStation 1 Water Chamber Philips Respironics DreamStation CPAP Water Chamber CPAPsupplies.com. This is a replacement water tank for the Philips DreamStation Humidifier. It is recommended to replace your water chamber every six months and clean it daily. It is advised to wash your water tank daily with mild soapy water, alternatively you can place it in a dishwasher. Additional information Weight 170 g Dimensions 8 8 6 cm CE Certified Yes Condition New Warranty 90 Days