I picked up my Eska/Sears at a yard sale and decided to replace the impeller since I don't know the maintenence history. When I dropped the foot, the water tube came out with the foot. Does the water tube connect to anything at the top of the column, or does it only serve to pump water up the column to keep it filled above the holes? I have a manual from Brim but can't tell from that or the exploded diagram on sears parts direct where the tube connects at the top.