Abstract: An adjustable buoyancy fishing bobber system for efficiently increasing or decreasing the buoyancy of a bobber to match the particular combined weight of the fishing line, lure and bait being currently utilized. The adjustable buoyancy fishing bobber system generally includes a casing including a first portion and a second portion, wherein the first portion extends from the second portion, wherein the casing includes a chamber formed within the first portion and the second portion. Adjusting the first portion with respect to the second portion adjusts a volume of air within the casing. A vent including a channel extends from the casing, wherein the channel extends through vent and fluidly connects to the chamber of the casing to allow the air from within the chamber to escape or enter within the chamber during adjusting.

Abstract: An adjustable buoyancy fishing bobber system for efficiently increasing or decreasing the buoyancy of a bobber to match the particular combined weight of the fishing line, lure and bait being currently utilized. The adjustable buoyancy fishing bobber system generally includes a casing including a first portion and a second portion, wherein the first portion extends from the second portion, wherein the casing includes a chamber formed within the first portion and the second portion. Adjusting the first portion with respect to the second portion adjusts a volume of air within the casing. A vent including a channel extends from the casing, wherein the channel extends through vent and fluidly connects to the chamber of the casing to allow the air from within the chamber to escape or enter within the chamber during adjusting.

Abstract: A filtration system that includes a plurality of underdrain blocks arranged to define a plurality of laterals. Each underdrain block defines an interior and an exterior and has an orifice that provides fluid communication between the exterior and the interior. The system also includes a plurality of media retaining plates. Each plate includes a plurality of slots that extend through the plate. Each slot has an average width of less than 0.065 inches. Each plate connects to only one of the plurality of underdrain blocks such that the slots provide fluid communication between the exterior and the orifice of the underdrain block to which the plate is attached.

Abstract: The invention recites a filtration tank including a chamber for holding liquid to be filtered, the filtration tank includes a fluid inlet for providing liquid to the chamber. The filtration tank further includes a fluid outlet and at least one filter block disposed between the inlet and the outlet, wherein the at least one filter block includes a porous cap having an average pore size of up to about 250 microns.

Abstract: A filtration system that includes a plurality of underdrain blocks arranged to define a plurality of laterals. Each underdrain block defines an interior and an exterior and has an orifice that provides fluid communication between the exterior and the interior. The system also includes a plurality of media retaining plates. Each plate includes a plurality of slots that extend through the plate. Each slot has an average width of less than 0.065 inches. Each plate connects to only one of the plurality of underdrain blocks such that the slots provide fluid communication between the exterior and the orifice of the underdrain block to which the plate is attached.

Abstract: A method of minimizing head loss in a filter system including a plurality of drop pipes, a plurality of filter cells having a maximum influent level, and a distribution box having a maximum influent level, a base, and a plurality of distribution cells. The method includes positioning a first end of each of the plurality of drop pipes within one of the distribution cells such that the first end of the pipe is disposed within the distribution cell and defines a weir having a weir height. The method further includes positioning a second end of each of the pipes in fluid communication with one of the plurality of filter cells. The method also includes supporting the distribution box such that the maximum influent level of the filter cells is above the base of the distribution box and below the maximum influent level of the distribution box.

Abstract: The invention recites a filtration system including a block including a first wall and a second wall substantially parallel to the first wall. A top surface that is substantially perpendicular to the first wall is disposed between, and coupled to, the first and second walls to at least partially define an inner chamber. The top surface further includes an orifice defining a passageway between a block exterior and the inner chamber. A plate including a plurality of slots, each slot having a width of less than about 0.065 inches, and a slot outlet, is coupled to the top surface of the block. The slot outlets in the plate are substantially coplanar and the plate, when coupled to the block, substantially covers the orifice.

Abstract: The invention recites a filter including a plurality of filter cells, each filter cell including a bottom surface and at least one side surface and defining a maximum influent level. The filter also includes a distribution box including a base and at least one wall, the base and wall at least partially defining a distribution region therein. The distribution box is supported such that the base is at or below the filter cell maximum influent level. The filter further comprises a plurality of drop pipes, each pipe having a first end and a second end, the first end of each pipe is in fluid communication with the distribution region, and extends above the base of the distribution box. The second end of the pipe is in fluid communication with one of the plurality of filter beds.

Abstract: The invention recites a filtration system including a block including a first wall and a second wall substantially parallel to the first wall. A top surface that is substantially perpendicular to the first wall is disposed between, and coupled to, the first and second walls to at least partially define an inner chamber. The top surface further includes an orifice defining a passageway between a block exterior and the inner chamber. A plate including a plurality of slots, each slot having a width of less than about 0.065 inches, and a slot outlet, is coupled to the top surface of the block. The slot outlets in the plate are substantially coplanar and the plate, when coupled to the block, substantially covers the orifice.

Abstract: The invention recites a filter including a plurality of filter cells, each filter cell including a bottom surface and at least one side surface and defining a maximum influent level. The filter also includes a distribution box including a base and at least one wall, the base and wall at least partially defining a distribution region therein. The distribution box is supported such that the base is at or below the filter cell maximum influent level. The filter further comprises a plurality of drop pipes, each pipe having a first end and a second end, the first end of each pipe is in fluid communication with the distribution region, and extends above the base of the distribution box. The second end of the pipe is in fluid communication with one of the plurality of filter beds.

Abstract: The invention recites a filtration tank including a chamber for holding liquid to be filtered, the filtration tank comprising a fluid inlet for providing liquid to the chamber. The filtration tank further includes a fluid outlet and at least one filter block disposed between the inlet and the outlet, wherein the at least one filter block includes a porous cap having an average pore size of up to about 250 microns.