Vertically oriented cylindrical vaults, boxes, systems, and methods of treatment systems to capture pollutants from storm water runoff and prevent the conveyance of these pollutants from entering a receiving water body or landscape area, which is designed to be a part of a local permanent storm water drainage infrastructure. A flow deflector can include a flow spreader for splitting an incoming flow into two flow paths that interact with high profile vertical baffle(s), and with low profile vertical baffles, and angled low profile vertical baffles that extend above downwardly inclined surfaces of a horizontal deflector having an opening for allowing debris to fall. Treated water can pass out of an outflow pipe on an opposite side of the cylindrical vault. A bottom open skimmer or a flow restrictive skimmer or a hydro-variant skimmer can be used in front of the output flow port. A hydro slide system can be used to push debris toward the middle of a sloped floor for easier removal through access points in the vault lid. The input flow port can be spaced approximately 90 degrees from the output port. And the input port and the output port can be on the same sides of the cylindrical vault.