Patent ID: 7954791

Claim:
A device for the aeration and circulation of a liquid medium having a surface comprising: a housing adapted for flotation within the liquid medium, said housing having a substantially open bottom having a predetermined area, a top portion, and an open side portion having an area substantially corresponding to said predetermined area of said open bottom, said open side portion extending substantially continuously from said substantially open bottom to said top portion adjacent to said surface of said liquid medium, and a plurality of side wall portions having a top end and a bottom end thereby defining a substantially open interior portion defined by said plurality of side wall portions of said housing, each of said plurality of side wall portions comprising a pair of parallel side wall sections and an intervening space between said pair of side wall sections for creating buoyancy in said device to provide for said flotation; a plurality of hose portions affixed to said substantially open bottom of said housing substantially parallel to the surface of the liquid medium thus providing an array of hose portions, said array of hose portions having a wall with a plurality of pores formed therein, spaced apart substantially evenly throughout a length of said hose; a gas supply pipe affixed to said substantially open bottom of said housing; and means for supplying a gas to said gas supply pipe.