Under normal usage, the water pump does not require regular cleaning. We recommend cleaning the pump and its filter sponge after at least six months of use. If you wish to clean the water pump, please follow the steps below: Step 1: Turn off the power and unplug the power cord. Step 2: Press the latch on the side of the water pump to open the pump cover. Step 3: Remove the sponge in front of the water pump and rinse it with clean water. Avoid using detergents as they may disrupt the nutrient balance. If the sponge is heavily soiled, you may also consider rinsing the entire water pump by soaking it in clean water and gently shaking to dislodge any debris. Step 4: Reassemble the components and restart the machine. If you require instructions for disassembling the water pump for deep cleaning, please contact us, and we will provide you with a cleaning guide.