Chemical dispenser for bodies of water

A chlorinator for chemically treating with tablets water in a swimming pool having a water recirculating system including a pump with output and input sides comprising, a cannister having a bottom, a top with an opening and connecting sides, lid means for effecting fluid-tight sealing of the top opening of said cannister, inlet means supplying water to said cannister from the output side of the pump, outlet means transferring treated water from said cannister to the input side of the pump, support means angularly disposed between said bottom of said cannister and the connecting sides to submerge a substantially uniform quantity of the tablets in the water, and controller means adjustable relative to said cannister to establish the water level in said cannister and supply uniformly treated water through said outlet means, said controller means including conduit means a portion of which remains proximate the bottom of said cannister and said support means for removing uniformly treated water and said conduit means having port means establishing the water level in said cannister by movement to various positions between said bottom and said top of said cannister.