Aquaculture is fundamentally predicated on effective water quality management; however, cultivating optimal aquatic environments frequently entails substantial electricity, labor, and technical expenditures. In modern intensive and high-density aquaculture systems, energy consumption continuously erodes profit margins. Numerous industry operational audits indicate that energy costs can constitute up to 50% of total operating expenses (OPEX) in contemporary aquaculture projects, with the majority of this expenditure allocated to aeration and oxygenation systems. For medium- to large-scale facilities, inflexible annual electricity expenditures amounting to tens or hundreds of thousands of dollars deplete essential capital liquidity that could otherwise be utilized for feed optimization or the integration of digital monitoring equipment. Energy consumption exhibits substantial variance across different aquaculture models. In optimally designed, highly efficient systems, electricity consumption per kilogram of fish production can be regulated at $1.0\sim1.8\text{ kWh/kg}$ (Hoseini et al., 2021). Conversely, in certain Recirculating Aquaculture Systems (RAS) heavily reliant on high-frequency recirculation and complex mechanical filtration, this metric may escalate to as high as $20.4\text{ kWh/kg}$ during practical operation (Hoseini et al., 2021). Even in biofloc systems, which utilize in-situ microbial self-purification and are characterized by minimal filtration requirements, average energy consumption remains notably high at $7.2\text{ kWh/kg}$ (Hoseini et al., 2021). Within these sophisticated system architectures, aeration generally constitutes 9% to 37% of the total energy load (Hoseini et al., 2021). These figures represent substantial financial outflows, indicating that aeration and oxygenation systems represent a persistent energy sink within the modern aquaculture sector. In both research and frontline engineering applications, a prevailing yet empirically flawed heuristic is frequently encountered: the assertion that higher Dissolved Oxygen (DO) concentrations inherently equate to greater system safety, and that maximizing aeration capacity is a prerequisite for achieving optimal survival rates. This disproportionate focus on achieving supersaturated, high-oxygen aquatic environments not only contravenes fundamental principles of physical mass transfer but also precipitates substantial energy wastage. Viewed through the first principles of environmental engineering, Dissolved Oxygen (DO) is not an isolated physical parameter; rather, it serves as the critical nexus integrating three primary domains: physical mass transfer via mechanical equipment, the physiological metabolism of aquatic organisms, and microbial water quality remediation. Unregulated aeration fails to yield appreciable increases in DO concentrations within near-saturated waters. Instead, it may disrupt the aquatic microecology and potentially induce physical trauma and acute stress responses in cultured organisms. Such extensive operational paradigms incrementally undermine facility profitability, compromise the stability of the dissolved oxygen system, and consequently emerge as a primary bottleneck limiting further escalations in stocking densities. A quantitative economic assessment further elucidates this issue. Consider a contemporary high-density shrimp aquaculture facility spanning 10 hectares with a targeted production capacity of 300 tons. To maintain baseline water quality and facilitate biological self-purification, the system necessitates approximately 300 kW of continuous aeration support during peak operational phases (Sprintex, 2024). Throughout a standard 150-day cultivation cycle, this aeration infrastructure will consume an estimated 1,080,000 kWh of electrical energy (Sprintex, 2024). Assuming a baseline electricity tariff of approximately \$0.30/kWh—representative of regions with elevated utility costs such as Singapore—the operational expenditure for aeration alone approaches \$324,000 (Sprintex, 2024). An expenditure of \$324,000 represents a substantial operational overhead. Broader industry data corroborates this paradigm. For instance, Australian shrimp cultivation facilities consistently report average aeration energy consumptions of approximately 4 MWh per ton of harvested biomass (Sprintex, 2024). Nevertheless, motivated by risk aversion toward catastrophic events—such as hypoxic pond failures or sudden algal die-offs (algal crashes)—many operators habitually maintain Dissolved Oxygen (DO) concentrations at near-saturated or supersaturated levels of $8.0\sim10.0\text{ mg/L}$ for extended durations. This risk-averse operational philosophy, prioritizing over-aeration as a safeguard, significantly inflates energy consumption and fundamentally impedes improvements in holistic system efficiency.
