INSTRUCTIONS: 1.EFFECTIVE PRESSURE FILTERS WITH INTEGRATED UVC CLARIFIER. 2.SPECIAL CIRCUITRY DESIGN,THIS PRODUCT CAN ADD HEATER INSIDE. 3.BECAUSE OF THE EASY CLEAN SYSEM WASH THE FILTER IS VERY EASY. 4.RINSING WITH DISCHARGE INTO CHANNEL LIKE WATERFALL OR WATERCOURSE,CAN BE OPERATED EVEN IF THE FILTER IS BURIED IN THE GROUND. 5.POLLUTED WATER IS PUMPED INTO A SEALED,CLOSED SYSTEM,DURING WHICH A WORKING PRESSURE OF 3M WATER HEAD CAN BUILD UP