A portable culling cart is disclosed comprised of a housing, a live well therewithin, a self contained means of filling the live well with water from a marine source, a self contained water circulation/aeration means, a self-contained power source for powering both the means of filling the live well with water and the circulation/aeration means, at least two wheels and a transportation handle. The cart is transported upon said two wheels by a user from site to site utilizing the transportation handle and utilizes powered filling of said live well from a marine source and powered circulation/aeration of water therewithin without need for outside power sources, pumps or manual filling of the live well. In a preferred embodiment, the cart includes at least one electric water pump, at least one electric battery having suitable voltage and amperage to power said at least one electric pump, a length of water pick-up hose having sufficient length to extend from the cart to a marine water source. In the preferred embodiment, the live well includes at least one water inlet and at least one water outlet mounted upon and providing fluid entry/exit to and from said live well. A water valve providing for and enabling control of direction of water flow to and from said live well is disclosed being especially configured to include at least two valve inlets, one valve outlet and three valve settings. The first valve inlet being in fluid connection with the water pick-up hose, the second valve inlet being in fluid connection with the at least one water outlet of said live well and the valve outlet being in fluid connection with the at least one electric water pump wherein. When the valve is placed in a first setting, the valve inlets and outlet are configured to connect the water pick-up hose with the at least one water pump and live well water inlet so as to enable filling thereof. When the valve is placed in a second setting, the valve inlets and outlet are configured to connect the live well water outlet with the at least one water pump and live well water inlet so as to provide circulation and aeration of water within the live well. When the valve is placed in a third setting, fluid connection amongst the at least one water pump, water pick-up hose and live well outlet are closed and sealed.