It is advisable to clean the ceramics 1 time a month.
Put the tank in your clean sink without clogging the flow and cover the ceramic with tap water with white vinegar (a glass of white vinegar). Let flow, renew the operation 2 to 3 times by only putting tap water. It takes the total disappearance of white vinegar so do not hesitate to rinse the ceramics abundantly to make the smell of vinegar disappear take a new non-abrasive sponge and pass it over the ceramics and rinse abundantly. Please note: be careful, vinegar water should not go through the filter cartridge otherwise you risk stripping the cartridge, your water will be undrinkable.