Abstract: A device and system for purifying a fluid is provided. The system includes a tank having an interior space and a media container disposed within the interior space. A valve is provided that cooperates with an element within the interior, the valve being movable between an open and a closed position. The valve being biased to the open position when the element is not positioned within the interior space, wherein the interior space is fluidly coupled to the atmosphere in the open position. The valve further being configured to move to a closed position when the element is positioned within the interior space.

Abstract: A device and system for purifying a fluid is provided. The system includes a tank having an interior space and a media container disposed within the interior space. A valve is provided that cooperates with an element within the interior, the valve being movable between an open and a closed position. The valve being biased to the open position when the element is not positioned within the interior space, wherein the interior space is fluidly coupled to the atmosphere in the open position. The valve further being configured to move to a closed position when the element is positioned within the interior space.

Abstract: To make an artificial topsoil combine by hand or in a blending machine, by volume, either dredged river silt, sand or basalt, and cellulose from recycled paper or yard waste, with composted animal or human waste for general reclamation and cereal crops, or vegetable or fruit residuals for gardens or potting soil, and then add calcium in the form of calcium silicate as slag or lime and ammonium nitrate or sulfate mixed with water, and then charcoal or equivalent amount of phosphorus, sodium, and sulfur as are present in charcoal. This combination of material replicates the calcium base, decaying cellulose, silt and animal or vegetable waste structure of natural soils.Various soil types can be duplicated by adjusting the base content of sand, silt, or basalt and rearranging the nutrient and mineral content to compensate for differing levels of each, for example: calcium and organic percentages should be increased to maximum when using sand as a base.