Abstract: Systems and methods for hydroponic plant cultivation are disclosed herein. The systems can include a water management unit, a bioreactor, and one or more plant growth regions. Plants may be cultivated on floats disposed in the one or more plant growth regions. The bioreactor can include a substrate upon which one or more of bacteria, fungi, and/or other microorganisms can reside. A nitrogen feed source can be delivered to the bioreactor where it is converted into nitrates via a nitrification process. Plasma activated water can also be added to the system.