Abstract: A smoking apparatus comprising of an appliance with a pipe bowl to serve as a smoking pipe with means for controlling the thermal conduction around the said pipe bowl, with means for communicating with a layer of water in a releaseably attached liquid-containing receptacle, with means for passage of the outgoing smoke to enter a filtering element removing moisture from the liquid-filtered smoke, which is then drawn into a flexible conduit for smoker's use. The invention takes into account the physical phenomenas of the two contrasting filtration processes and to bring them to a balance. All parts thereof are synchronized for integrating the various functions into one result; to produce a tobacco smoke which is "clean", "sweat", "cool", "dry" without a "bite". The smoker can, without tedious encumbrances change and replace parts that draw contaminants.

Abstract: An aeration and filtration pump for aquariums, including a housing formed with openings through which the aerated and filtered air can return to the aquarium tank, and an impeller enclosure member positioned within the housing. The impeller enclosure member includes an intermediate portion and an upper portion formed with spaced openings, with a screw impeller being positioned within said intermediate region of said enclosure member for impelling water upwardly within said member. Air impeller means are mounted above the screw imepller and force air drawn into said housing downwardly form aerating the water impelled upwardly by the screw impeller. Water is admitted to the bottom of the unit, and filter material is positioned between the converter member and the housing, with the aerated water passing through the filter material and the openings in the housing wall for return to the tank.