This study discusses the fusion tank system as a result of the usual non-linear and linear mathematical models' theoretical modeling. It is an illustration of an interactive control system, and also its non-linear and coupling properties are employed to examine various control strategies for complex systems. A modified model reference adaptive control (MRAC) is also suggested for the hybrid tank system to verify its effectiveness and steady-state performance. The Model Reference Adaptive Regulation (MRAC) is used to maintain fluid levels in the double tanks at the desired standards in a smooth manner. Through simulation, the performance of the MMRAC controller is connected to other control methods. MATLAB Simulink is used to simulate MRAC and Modify MRAC's responses. The simulation results are utilized to validate the system's findings. © 2022 IEEE.