The build-up of mineral deposits and the temperature of the heating plate on the DreamStation Go Heated Humidifier can cause the Tank Bottom to wear out faster than the Tank Lid. To maximize the life of the Tank Lid, you can wash it daily with mild soap and warm water and once weekly in the dishwasher.
The Tank Bottom is made for the DreamStation Go and is not compatible with any other product. The Tank Bottom should last around one year. Since the Tank Bottom doesn’t last as long as the Tank Lid, though, it helps to separate the two parts so you won’t have to purchase an entire humidifier tank when the Tank Bottom needs replacing.