screen 21 attached by screws 23 to the bottom of the filter tube 1 the invention is now assembled with fig1 showing in elevation the right side view of the filter in its operating position with its discharge tube 4 penetrating the wall between the septic tank and pump chamber the weighted float fig1 will rise and fall as the effluent level fluctuates within the pump chamber this vertical movement of the weighted float fig1 which is tethered by cable 17 to the brush 11 will cause the brush 11 located in the filter tube 1 to move up and down in doing so it will pass over the internal filter screen 13 this action will keep the internal filter screen 13 free of debris and allow for the free flow of effluent from the septic tank through the filter and into the pump chamber the brush 11 should have little effect on the external filter screens 21 the filter 39 s discharge tube 4 is inserted into the pre existing drain hole located in the dividing wall located between the septic tank and pump chamber of a compartmentalized tank the four way connector 3 being fused to the rest of the filter is then slipped over the end of the discharge tube 4 and secured by the insertion of insert bolt 18 the effluent in the pump chamber is reduced to its lowest level the weighted float fig1 is placed on the surface of the effluent the cable 17 having previously been attached to the brush 11 in the filter tube 1 and passed through the pulley units 14 including.