Abstract: Segmented stackable filter assembly for filtering a gas and method of manufacturing same. An exemplary embodiment of the segmented stackable filter assembly comprises a plurality of filter segments stackable end-to-end for varying filtration capacity of the stackable filter assembly. Each filter segment includes an annular outer wire mesh and an annular inner wire mesh spaced apart from the outer wire mesh to define a gap therebetween containing filter media. The inner wire mesh defines a central air flow passage axially through the filter assembly. A lower end plate has an opening for receiving a neck portion upwardly projecting from an adjacent upper end plate, so that both filter segments are prevented from laterally moving relative to each other. A fan assembly is supported by the neck portion for suctioning the gas through the plurality of filter segments.

Abstract: A Gnat-trapping Hydroponic Lid and Wrapper and Method of Use Thereof. The Lid is configured to be placed over the top of a hydroponic cube or hydroponic basket. The top surface of the lid is best if colored in a manner that attracts gnats and other flying insects. The bottom surface of the lid is best if black or other dark color that will inhibit mold formation. There are one or more holes in the lid to accommodate a seedling growing therethrough and possibly an irrigation tube going down into it. A connecting slit running between an edge of the lid and the seedling aperture so that the lid can be removed without damaging the seedling. The lid should has an adhesive applied to its top surface that will capture gnats and other flying insects landing thereon. In another embodiment, a supplemental sheath is wrapped around a hydroponic cube. This inner sheath has the gnat adhesive applied to it. There is then a second (outer) protective sheath applied around the cube, over the top of the gnat adhesive.