The reason for soaking and cleaning the filter is due to the activated carbon inside the filter may move to the surface of the filter during shipment, so it is highly recommended to rinse the filter to remove the black carbon particles on the surface of the filter.

Note: Please rinse and soak the filter under warm running water for 30 seconds before using it to remove the activated carbon particles on the surface of the filter.

If there are any other questions regarding the Pet Water Fountain, please contact us for further assistance.