IMPORTANT TO KNOW PETKIT FILTER 2.0 is designed for EVERSWEET 1 and 2 PETKIT fountains. If you have EVERSWEET WATER FOUNTAIN 1, remember to buy the NEW TRAY together. FILTER 2.0 is only compatible with NEW TRAY and FOUNTAIN 1.0. Stronger filtration PETKIT filter 2.0 uses purolite company filter material as raw material and increases the amount of filter material in the filter element, so that the filtration capacity is better and harmful substances such as hair, debris and heavy metals in the water are better filtered. Your pet is protected from diseases. 4 types of filtration The filter layer is made of: two layers of high-quality cotton mesh, coconut shell activated carbon and ion exchange resin. Please note Before changing the filter element, soak it in cold water for 5 minutes to activate the ion exchange resin. After changing the filter element, press and hold the black reset button on the bottom of the container to turn off the orange indicator light on the container. When to change the filter Normally, the filter should be changed every 3 months in SMART mode and 1 month in NORMAL mode. The indicator will turn ORANGE when the filter needs to be changed