In accordance with an embodiment, a gain enhancement circuit includes an amplifier having an input terminal, a transistor coupled to the input terminal and a capacitance dynamically coupled to another input terminal of the amplifier by a switch, wherein the capacitance is a parasitic element of the transistor. This encoded arrangement can be extended to any number of encoded bitlines, e. The walls of the flow channels have an open pore structure. The entered check identifier with replacement symbols is parsed to distinguish the fields. Usage of grey water is maximized without completely eliminating the fresh water as a component that ensures service when grey water is unavailable.