In recent years, luxury residential communities, golf courses, and commercial complexes located in tropical and arid regions have increasingly constructed expansive artificial lakes and landscape fountains. However, these mega water features often encounter severe water management crisis. Due to the massive surface area, shallow depth, and prolonged exposure to intense UV radiation and extreme heat, conventional disinfectants decompose entirely within a few hours. This triggers rapid algae blooms, turning clear water into a turbid, foul-smelling hazard. Relying solely on multiplying the dosage of unstabilized chlorine not only causes monthly chemical budgets to skyrocket exponentially, but the resulting localized high chlorine concentration also damages surrounding vegetation and corrodes expensive fountain pump infrastructure, trapping operators in a vicious cycle of high costs and poor results.