OASE ProfiClear Premium drum filters utilize a rotating screen to remove debris and has moving bed filtration to strip ammonia and nitrites from the water. The OASE ProfiClear Premium is a fully automatic filter system that offers hands-free operation of even fully stocked koi ponds. The pump-fed, flow-through drum filter provides effective cleaning and polishing of water down to 80 microns. The drum is fully self-cleaning with a built-in 29 psi high-pressure cleaning pump and automatic 4" waste discharge outlet. The Moving Bed System with 40 liters of Hel-X Bio-media, provides optimal biological filtration capable of decomposing up to 10 oz. of food waste per day. The filter capacity can be upgraded by adding an additional 20 liters of Hel-X Bio-media. The micro control system offers a choice of manual cleaning, time interval cleaning or full automatic cleaning via the sensor. It can be buried up to the UVC mounts for maximum versatility in filter placement near an existing source. The pre-installed insulation on the lid ensures quiet operation during cleaning cycles. The digital temperature display provides accurate water temperatures for seasonal maintenance. You can add an optional Bitron C UVC clarifier to either the ProfiClear Premium filter system for enhanced clarity and cleaner water. The integrated linear air stones provide extra oxygen in the module with included connection kit for the AquaOxy 450. The ProfiClear qualifies for the OASE Clear Water Guarantee when paired with the proper pump and UVC Clarifier. Fully control your ProfiClear Compact-M or -L with the Easy Garden Control (EGC) system from anywhere in the world! The ProfiClear Premium Compact-L Pump-Fed has a wattage of 870 while cleaning, an inlet of 3” and an outlet of 4”. It has a minimum flow of 2,640 GPH and a max flow of 5,280 GPH. It has dimensions of 53”L x 35.5”W x 32.5”H, a pond volume of up to 31,500 gallons and a 3-year warranty.